Milesight WS203 868 LoRaWAN motion sensor (humidity, temperature)
SKU :
MIL-WS203-868excl. 19.0% VAT plus Shipping costs
The Milesight WS203 is a LoRaWAN sensor that has both an integrated temperature and humidity sensor as well as a motion sensor. This can be used to detect ambient temperature, humidity and people activity and transmit them to the LoRaWAN IoT server.
The WS203 is a wireless environmental sensor that detects human or animal movement, ambient temperature, and humidity. It can detect motion based on passive infrared (PIR) with a wide detection range of up to 120° horizontally and 100° vertically within 6 meters. The detection range of the PIR sensor in the WS203 is also adjustable and can be adapted to the environment. Coupled to the HVAC system, the Milesight WS203 Motion & TH sensor, can control the indoor climate. For example, it detects motion and adjusts the indoor climate accordingly. This reduces energy and increases comfort.
Equipment | |
---|---|
sensor | Motion Detection, Humidity, Temperature |
Communication | |
frequency | EU868 |
connectivity | LoRaWAN |
Power supply | |
power supply | battery, included, not replaceable |
battery details | ER18505, Lithium-Thionylchlorid, nicht aufladbar |
number of batteries | 1 |
Certifications | |
enclosure protection class | IP30 |
PIR motion detector or ToF sensor

PIR motion detector
How a PIR motion detector works:
The PIR motion detectors (passive infrared sensors) are named after pyroelectricity, whereby a change in temperature leads to a measurable change in electrical voltage. Every living organism emits infrared radiation. A change in the heat source registers that something is moving and, depending on the design, in which direction it is moving. PIR motion detectors are therefore often used as light motion detectors, whereby the light is activated when a PIR motion detector registers movement.
Applications of a PIR motion detector:
PIR motion detectors are key instruments in smart facility management. They regulate the motion detector light in offices and public spaces, reduce energy waste and increase comfort. At the same time, they detect unauthorized access, contribute to security and enable efficient lighting control as part of smart facility management.
ToF sensors
How a ToF sensor works:
The ToF sensors are named after the term Time-of-Flight, which also describes exactly what happens with these IoT sensors. They measure the time it takes for the emitted light to be reflected and to arrive again. Depending on the model, several fields are used to register not only whether something is in the entire area, but also the differences within this area. This can be very helpful in applications such as offices or business premises where user behavior is also relevant. Together with learned patterns through AI, ToF sensors can be the basis for many intelligent applications.
Applications of a ToF sensor:
ToF sensors are valuable tools in smart facility management. They enable the precise recording of room utilization in offices and event rooms as well as people counting with directions of movement. As effective people counters, ToF sensors record the presence of people in real time and enable demand-oriented use of the premises as part of smart facility management.


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