RS485 Modbus 7-in-1 Ultrasonic Weather Station

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IOT-S300WS7 is an ultimate all-in-one RS485 Modbus weather monitoring system for various and continuous atmospheric conditions including air temperature, relative humidity, barometric pressure, light intensity, rainfall(optical), wind speed, and wind direction (ultrasonic). It boasts high resolution and accuracy with rugged and aesthetic housing.


Outstanding Features

  • All-in-One Weather Station - This weather monitoring system is designed to monitor various and continuous atmospheric conditions, including air temperature, relative humidity, barometric pressure, light intensity, precipitation intensity, wind speed, and wind direction.
  • RS485 Compatibility - The output signal is RS485, the standard Modbus-RTU communication protocol, which supports changing the communication address and wave special rate and other functions. And RS485 support as far as 1200 meters communication. while supports secondary development and is widely used.
  • Ultrasonic Sensor - For precise measurement, the sensors to measure wind speed and wind direction use ultrasound instead of traditional mechanical 3-cup or vane anemometer.
  • Greater Stability - Radiation shields are equipped to ensure accurate ambient measurement.
  • Built-in Heater - Integrated heaters that can be switched on in extreme weather.
  • Embedded with the Electronic Compass - Magnetometer: enabling easy installation and you can choose to disable the electronic compass while orienting to the North manually.


  • Weather monitoring for agriculture, meteorology, forestry, ports, railways, schools, and buildings, etc.

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What Is a PoE Injector and How to Use It?

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Power over Ethernet (PoE) technology allows the transmission of power and data over Ethernet cabling, using devices such as PoE switches, PoE injectors, and PoE splitters. In situations where power outlets are not readily available, PoE injectors offer a convenient solution for installing low-power devices in hard-to-reach areas without significant infrastructure modifications or budget constraints. This article aims to provide a comprehensive understanding of PoE injectors, including their definition, usage in applications, and answers to frequently asked questions.

What is a PoE Injector?

A PoE injector, also known as a midspan or PoE adapter, enables non-PoE compatible switches to power PoE devices by delivering both power and data over a single Ethernet cable.

Benefits of PoE Injectors:

  • Easy installation: Simply connect the PoE injector to the PoE endpoint and an Ethernet switch to provide data and power.
  • Network expansion flexibility: PoE injectors add PoE capability to non-PoE Ethernet switches, extending the network connection distance and providing combined power and data over Ethernet cables for improved connectivity.
  • Cost-effective solution: By utilizing existing Ethernet equipment and cabling infrastructure, implementing a PoE injector solution minimizes additional costs.
How Does a PoE Injector Work?





When Ethernet switches or other devices lack PoE functionality but need to support Powered Devices (PDs) like PoE IP cameras, PoE wireless access points (WAPs), or PoE lighting, a PoE injector can supply power and data to these PDs over distances of up to 100 meters. Typically, a PoE injector converts alternating current (AC) into direct current (DC) to power low-voltage PoE devices.

Types of PoE Injectors:

1.Active vs. Passive PoE Injector:

A PoE injector following the IEEE 802.3af, IEEE 802.3at, or IEEE 802.3bt standards is known as an active PoE injector. These injectors require a handshake between the power sending and receiving PoE devices. If the receiving device does not provide the proper acknowledgment, the injector will not supply power, ensuring the safety of PoE devices. Active PoE injectors generally operate at a voltage of 44 to 57 volts DC.

In contrast, a passive PoE injector does not conform to the IEEE standards mentioned above. Passive PoE devices usually operate at voltages ranging from 18 to 48 volts DC. Connecting the wrong voltage may cause permanent electrical damage to the device.

2.12V vs. 24V vs. 48V PoE Injector:

PoE injectors can be categorized based on the output power voltage they provide, such as 12V, 24V, or 48V. When selecting a PoE injector, it is crucial to consider the voltage requirements of the powered PoE devices.

Additionally, PoE injectors can also vary based on port numbers, such as single-port PoE injectors, 2-port PoE injectors, and so on.

How to Use a PoE Injector?

PoE injectors excel at providing data and power to standard-based PoE, PoE+, and PoE++ compliant devices. In practical applications, a PoE injector acts as an intermediary between a non-PoE switch and PoE compliant devices, such as IP cameras or wireless access points, delivering power to them.

Take an IP camera as an example. The following steps illustrate the power supply process:

  1. Test all equipment to ensure the IP camera, PoE injector, and camera management system are functioning properly. Configure video and network settings before mounting the IP camera.
  2. Connect the Ethernet cable from the PoE injector's Power or PoE port to the IP camera's PoE port.
  3. Mount the IP camera in a well-lit area to capture clear images.
  4. Connect another Ethernet cable between the injector's Ethernet or Data port and the Ethernet switch.
  5. Plug the injector's power cord into a local AC electrical outlet.

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Industrial 8 Ports Full Gigabit Cloud Managed PoE Switch

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Remote monitor and control PoE ports from central Cloud, such as turn On/Off PoE, speed / priority / PoE budget settings; Includes one year free subscription; Also supports VLAN, QoS in local WEB GUI.


Provides 8*10/100/1000Base-T Ethernet PoE ports and 2*1000Base-X SFP Uplinks.


Each port up to 30W (IEEE802.3af/at), total 120W PoE power. POE Output Ports support POE Mode A. Power adapter is included and built-in the metal enclosure.

  • Q-PoE AND P-PoE 

Supports Q-PoE (Quick PoE) technology, which enables PoE power supply immediately upon switch startup without waiting for switch system software control. Support P-PoE (Perpetual PoE) technology, which enables PoE power supply without interruption when switch is restarting and restores network quickly.


Automatically identify PD devices for power supply without damaging non-PoE devices.

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What is Solar PoE Switch? Why do you need it in your solar system?

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Have you ever thought about integrating solar controller and PoE Switch and create a single powerful device that allows for solar energy management, battery management, and network data and power management and even has a capability to integrate to larger network? Today, we're thrilled to introduce our latest product line that's set to redefine the way you install, setup, and manage your solar power system! This is Solar PoE Switch. Prior to the PoE Switch, there is Solar, exactly, literally, that stands for Solar Controller and PoE Switch, 2 in 1, industrial PoE Switch with built-in Solar Power Controller. Before we jump right into the details, let's take a quick look at what Solar Controller and PoE Switches are, and how they work in Solar Power systems!

A Solar Controller is a vital component in solar power systems, one of the key function here is that acting as a smart battery charger to safeguard your battery from potential damage. When connecting a battery directly to solar panels without a control device, the risk of overcharging and subsequent damage due to excessive voltage and current becomes a concern. it plays a important role at the entire solar power system.

And as we all know, PoE switches simplify solar system connectivity by combining power and data transmission over a single cable. They enhance efficiency by reducing the need for separate power sources for connected devices in a solar setup. PoE switches facilitate centralized control and monitoring, optimizing the management of solar-powered devices in a streamlined manner.

LINOVISION Solar PoE Switch, is industrial PoE Switch with built-in solar charge controller, working directly with PV solar panels and batteries to supply non-stop PoE power for devices, this is a single highly integrated device that allows for solar energy management, battery management, and remote network data and power management and even has a capability to integrate to larger network!
You might wonder, why did we adopt this design? what would benefit your solar power system?

Combining the solar power controller with a PoE switch into a single fully integrated device offers several pros, here's what we thought through:

  1. Highly Integrated Design: Solar PoE Switch streamlines the installation and maintenance. Users only need to deal with one device instead of separately configuring and managing the solar controller and PoE switch, this integrated design allows for smoother energy flow within the system by optimizing the collaboration between components. From the cost perspective, purchasing a single unit is often a lower cost than buying two separate devices. Additionally, you will save on labor costs associated with installation and maintenance.
  1. Compact Size: The integrated design can decrease the number of devices and overall physical size, saving space. It can eliminate the need for separate cables, power supplies, making installation and maintenance much easier. This is particularly crucial in setups with limited space.
  1. Simplified Deployment and reduced system complexity: the integrated device reduces the complexity of configuring multiple components. Simplifying the device's installation process. It can decrease the technical complexity, especially for users with limited technical expertise.
Meanwhile, the reason we are excited about moving toward this line of products is that some pain points of the existing separate installation approach can be solved.
  1. Complexity of installation: Users would need to individually install solar power controllers and PoE switches, which could consume more time and require additional technical expertise. The configuration process may involve coordinating between different devices. Installing and managing two separate devices is more complex than installing a single integrated device.
  1. Space Occupancy: Independently deployed devices typically require more space, as they cannot be integrated into a relatively compact design. This can be a challenge in applications with space constraints.
  1. Technical Challenges: Configuring two separate devices may pose higher demands on technical personnel. Ensuring effective collaboration between the two systems may require additional technical expertise. Separate systems may require distinct maintenance and monitoring efforts for solar power and PoE networks. This can introduce additional complexity in troubleshooting issues and monitoring overall system performance.
  1. Lack of Integrated User Experience: Users might need to deal with independently sourced devices from different vendors, potentially involving different user interfaces and some incompatible issues.

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Linovision New Product - Industrial 8 Ports Full Gigabit PoE Switch with Remote PoE Ports Management

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POE-SWR608G is a Web Smart PoE industrial switch, with eight 10M/100M/1000Mbps adaptive RJ45 ports and four 1000Mbps SFP optical fiber module expansion slots.All eight RJ45 ports support PoE/PoE+ power supply.It supports static routing, provides comprehensive security policies, QoS policies, and rich VLAN functions. It has the ring network function and can form a ring network. Switches hold hands to form a ring network topology.


PoE port support Remote Cloud Managed, Such as PoE Port On/Off Control, Port Speed Limit, PoE Power Control and Port Priority. VLAN, QoS and ONVIF device discovery can be managed via WEB.


Providing 8*10/100/1000Base-T Ethernet PoE ports and 4*1000Base-XSFP Ports.


Each port up to 30W (IEEE802.3af/at), total 180WPoE power

 One-Key FAST RING and SCP

Support One-Key Fast Ring Fiber Network and Broadcast Storms Protection.


Support 2 channel DC48-57V redundant power inputs. Supports POE Mode A output.


Metal Shell design ensure better heat dissipation. Support DIN rail mount and Wall mount. Wide working temperature (-20°C ~ 60 °C or -4°F~140 °F) and 6KV surge protection.

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POE Switches Ideal for Truck/Bus/Vehicle/Rail Applications

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In today's modern transportation industry, the integration of technology has become increasingly important. One such advancement is the utilization of Power over Ethernet (POE) switches in trucks, buses, vehicles, and rail systems. POE switches provide a convenient and efficient solution for powering and connecting various devices, enhancing connectivity, and enabling a wide range of applications. In this blog post, we will explore the benefits and considerations of using POE switches in these transportation settings.



1. Enhanced Connectivity:

POE switches offer seamless connectivity for a variety of devices within trucks, buses, vehicles, and rail systems. They enable the connection of IP cameras, Wi-Fi access points, passenger information systems, onboard computers, and more. With a single POE switch, multiple devices can be connected, simplifying the network infrastructure and reducing the need for additional power sources.

2. Power Efficiency:
By utilizing POE switches, power management becomes more efficient. Devices can be powered and connected through a single Ethernet cable, eliminating the need for separate power cables and reducing clutter. This streamlined approach saves space and minimizes the risk of power-related issues, ensuring a more reliable and efficient transportation system.
3. Flexibility and Scalability:
POE switches offer flexibility and scalability, allowing for easy expansion or modification of the network. As transportation needs evolve, additional devices can be seamlessly integrated into the existing infrastructure without the hassle of rewiring or installing new power outlets. This adaptability makes POE switches an ideal choice for dynamic transportation environments.
4. Reliable Power Supply:
Transportation settings often face challenging conditions such as vibrations, temperature variations, and power fluctuations. POE switches designed for these environments are built to withstand such conditions, ensuring a stable power supply and uninterrupted connectivity. They are engineered with robust features like wide temperature ranges, shock resistance, and surge protection, making them highly reliable in demanding transportation applications.
5. Cost-Effectiveness:
Implementing POE switches in trucks, buses, vehicles, and rail systems can lead to cost savings. By integrating power and data transmission over the same Ethernet cable, there is a reduction in installation and maintenance costs associated with separate power and data cabling. Additionally, the scalability and flexibility of POE switches contribute to long-term cost-effectiveness, as future expansions or modifications can be easily accommodated without significant infrastructure changes.

POE switches offer numerous benefits for truck, bus, vehicle, and rail applications, providing enhanced connectivity, power efficiency, flexibility, reliability, and cost-effectiveness. As the transportation industry continues to embrace technology, the utilization of POE switches becomes increasingly crucial in creating efficient, connected, and intelligent transportation systems. By leveraging the advantages of POE switches, transportation operators can optimize their networks, improve passenger experiences, and enhance overall operational efficiency.



LINOVISION DC12V POE Switch Selection Guide

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Model POE-Switch0504GD POE-Switch1008-Solar POE-SW708GM-DC12V
Input Dual DC
Input: 12V~48V DC
Dual DC
Input: 12V~48V DC
Dual DC
Input: 12V~57V DC
Output 48V POE Standard 48V POE Standard 48V POE;
12/24V DC Output
Uplink Ports 1 Gigabit Ethernet Uplink 2 Gigabit SFP 2 Gigabit SFP
POE Ports 4 Gigabit PoE Ports 8 Gigabit PoE Ports 8 Gigabit PoE Ports
POE++ Ports / / 1 * BT 90W Port
POE budget 120W (DC24V/48V),
60W (DC12V)
240W (DC48V),
120W (DC24V )
240W (DC48V),
120W (DC24V )
L2/L3 Management / / VLAN, QoS, SNMP, Fast-Ring
PoE Port Control / / Turn On/Off PoE
Installation Method DIN-Rail/Wall-Mount DIN-Rail/Wall-Mount DIN-Rail/Wall-Mount

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What's is SFP? What is used for? What's the benefit of SFP to industrial applications?

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Have you ever noticed that intriguing port on your PoE switch and the distinct cable connector that accompanies it? If not, you're about to discover its significance, especially in the realm of big scale networks and businesses requiring extensive network coverage.

Now, let's tackle the burning questions:
Q: What is the SFP, and what does it mean?
A: The SFP port stands for Small Form-factor Pluggable port. It's a compact slot designed for SFP transceivers, allowing the insertion of hot-swappable modules. These modules facilitate the connection of fiber optic or copper Ethernet cables to the switch, commonly used for uplink connections in networks.

Q: What is it used for?
A: The SFP port on a PoE switch serves multiple purposes. It's the go-to solution for high-speed data transfer, ranging from 10 gigabit (SFP+) to a staggering 400 gigabit (QSFP 56DD). This port excels in low latency, as evidenced by a meticulously crafted latency chart in microseconds. Moreover, it's the gateway to long-distance data connectivity, with some types, like Type ZX, boasting a maximum reach of up to 80km. Primarily, SFP ports facilitate uplink connections to other switches, routers, or network devices using fiber optic or copper Ethernet cables.

In industrial settings, the benefits of SFP ports in PoE switches are manifold:
  1. Flexibility in Connectivity: SFP ports offer a spectrum of connectivity options, accommodating both fiber optics and Ethernet cables. This versatility ensures seamless connections for different devices and diverse network setups.
  2. Enhanced Distance Reach with Fiber Optics: The integration of fiber optics extends the reach of industrial networks. Overcoming the limitations of standard Ethernet cabling, SFP ports enable longer transmission distances without signal degradation.
  3. Scalability and Easy Expansion: PoE switches equipped with SFP ports pave the way for scalable industrial networks. As your network grows, additional devices can be effortlessly integrated without the need for substantial infrastructure changes, providing a cost-effective and scalable solution.
  4. High-Speed Data Transfer: Crucial for applications requiring swift and reliable data transmission, SFP ports support high-speed data transfer. This capability is particularly vital in industrial settings where real-time data communication is an absolute necessity.

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Industrial 8 Ports Full Gigabit Managed POE Switch: A more comprehensive PoE switch with DC12~57V Input

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The LINOVISION Industrial 8 Ports Full Gigabit Managed PoE Switch with DC12V-57V marks a significant leap forward. Designed to cater to the demanding requirements of industrial settings, this switch combines robust performance with advanced management features.


High-Speed Connectivity and SFP Uplink Options

At the core of its functionality are eight 10/100/1000Mbps PoE ports, ensuring high-speed data transmission across the network. Complementing these are two high-speed 1G/2.5Gbps SFP uplink ports, providing additional flexibility and bandwidth for upstream connections.


Advanced L2 Management for Enhanced Network Control

With L2 management capabilities, including VLAN and QoS, administrators can segment network traffic, prioritize critical data. The capability to manage PoE ports is a game-changer. This feature allows network administrators to monitor and control the power being delivered to devices (like IP cameras, wireless access points, and VoIP phones) directly through the network cable.


Versatile Power Supply Options

Understanding the diverse power needs in industrial scenarios, the switch supports a wide range of DC input from 12V to 57V. This versatility makes it an ideal choice for applications relying on solar systems and vehicle power systems, ensuring uninterrupted operation in various environments.


BT90W PoE Ports, Quick PoE and Perpetual PoE

Equipped with cutting-edge Q-PoE and Perpetual PoE technologies, the switch guarantees rapid and continuous power supply. This is crucial for environments where consistent power delivery is non-negotiable. The inclusion of a high-capacity 90W BT PoE port further extends its capability to power more demanding devices.


IoT Integration and Reliable Performance

Enhancing its industrial application, the switch features an RS485 serial port, facilitating seamless IoT integration. This feature broadens the scope of devices and systems that can be connected and managed, making it a future-proof choice for modern industrial networks.

By using LINOVISION Industrial 8 Ports Full Gigabit Managed PoE Switch. (POE-SW708GM-DC12V)

Simulating the application in a solar power system, demonstrate its wide voltage input(DC12V from Solar System), output of BT90W PoE voltage to power up PoE devices(PTZ Camera), and DC12/24V output to power non-PoE Wireless AP, remotly managing PoE port on/off, power budget limit, data on/off, through the PoE Port Management function.

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Facilitating Cold Chain Traceability Through Bluetooth Technology and Teltonika Router

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The cold chain market is expanding. Since the consumption of cold produce is growing, businesses are looking for improved traceability options, including food, pharmaceutical, and cosmetics companies. A good example of the scope of the problem is a global food waste report by the United Nations where it states that over 20% of fresh produce gets lost in the supply chain between harvest and retail. The result? Huge economic, social, and environmental losses. As such, there is a growing interest and efforts in developing sophisticated cold chain traceability technologies.


Should it be food, chemical products, or the new hot topic - vaccine, when the temperature requirements are not met even for a short period, the goods are no longer safe and need to be discarded. As this results in financial losses, the businesses are interested in possibilities to track the supply chain for accountability and prevention reasons. Besides, with products like vaccines, there is a lot more planning involved due to required follow-up doses that are also time-bound. Such goods are also an attractive target for theft or fraud. Tracking the location and movement of them is therefore essential to avoid losing or misplacing the shipment. All of these processes require effective tools and systems in place.


Efficient tracking in the supply chain can be ensured by installing Bluetooth sensors on the pallets or the boxes where the products are being transported. Depending on what kind of metrics need to be monitored, there is a choice of ID (for equipment tracking), T (for temperature), or RHT (temperature and humidity) sensors, and others. Up to 200 such sensors can be connected to Teltonika Networks dual SIM RUTX11 cellular router for tracking.

The router collects the information from the sensors via Bluetooth and sends it further to the IoT platform via MQTT or HTTPS protocols. The router is equipped with GNSS capabilities, so it can track events happening at an exact specific location. Using the sensor data allows to set up notifications whenever something out of the ordinary occurs. For example, if the temperature falls behind or gets close to a certain measure the system warns the employees and the situation can be rectified to avoid bigger losses. Or an alert may be set up for whenever an object changes its’ location or leaves the premises. In general, GNSS allows to easily trace the goods inside the warehouse or during its’ journey through the whole of the supply chain.



  • Reliable connectivity – ensured by dual SIM cellular router with auto-failover and SIM switch capabilities.
  • Simple ecosystem – one RUTX11 can connect up to 200 Bluetooth sensors and the pairing process takes seconds using an NFC enabled device (like a smartphone).
  • Security – since some cold chain products, like pharmaceuticals, are of interest to criminals, the data is secured by professional-level VPNs and industrial-grade protocols.
  • Exact traceability – GNSS service availability on the RUTX11 router allows to track the exact location (or supply chain link) where a certain event occurred.

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Revolutionizing RV Power Systems: LINOVISION's Wide Voltage PoE Switch

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Understanding Traditional RV Power Systems and the Role of Inverters

Recreational vehicles (RVs) have always been about blending the comforts of home with the freedom of the road. A critical aspect of these comforts is the RV's electrical system. Traditionally, RVs use a combination of batteries, generators, and shore power to meet their electrical needs. Central to this system is the inverter, which converts DC power from the RV's batteries into AC power, enabling the use of household appliances and electronics on the road.

Challenges with Traditional Inverters in RVs

While inverters are integral to RV power systems, they come with several drawbacks:

    1. Energy Loss: Inverters are not 100% efficient. Some energy is lost in the conversion process, leading to reduced overall system efficiency.
    2. Space and Weight Concerns: Inverters add extra bulk and weight, which is always a consideration in space-conscious RV environments.
    3. Complexity and Maintenance: Installing and maintaining an inverter system can be complex and often requires professional assistance.

The Advantages of PoE (Power over Ethernet) Devices

PoE technology offers a streamlined approach to powering devices. By delivering power and data over a single Ethernet cable, it simplifies cabling requirements and reduces installation complexity. This is particularly advantageous in mobile environments like RVs, where space and simplicity are key.Introducing LINOVISION’s Wide Voltage Input PoE SwitchLINOVISION’s innovative Wide Voltage Input PoE Switch (DC12-48V to PoE IEEE802.3 af/at) stands out as a solution perfectly tailored for RV use. This switch can efficiently convert a wide range of input voltages to standard PoE, providing flexibility and compatibility with a variety of RV power systems.

Enhancing RV Power Systems with LINOVISION’s Wide Voltage input PoE Switch

The application of LINOVISION’s PoE Switch in RVs offers numerous benefits:

  1. Increased Efficiency: By directly converting DC power to PoE without the typical losses associated with inverters, it ensures more efficient use of the available power.
  2. Space-Saving Design: Its compact size is a significant advantage in the confined spaces of an RV.
  3. Simplicity: The PoE switch simplifies the RV’s electrical system by reducing the need for separate power and data cabling.
  4. Cost-Effective: Eliminating the need for an inverter reduces both upfront and long-term costs associated with purchasing and maintaining additional equipment.

LINOVISION’s Wide Voltage Input PoE Switch represents a significant leap forward in RV power management. By offering a more efficient, space-saving, and user-friendly alternative to traditional inverters, it enables RV enthusiasts to enjoy the comforts of modern technology while on the move, without the complexities and inefficiencies of the past.


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