Motion, Temperature, and humidity sensor

WS203 Motion, Temperature and Humidity Sensor

The WS203 is a versatile environmental monitoring device, integrating motion and temperature/humidity (TH) sensors. Using passive infrared (PIR) technology, it detects motion within an 8-meter range, triggering TH detection and periodically reporting the environmental status over a LoRaWAN® network.


  • Wireless Transmission: LoRaWAN®, Milesight D2D
  • Frequency: Multiple bands including CN470, EU868, US915
  • Detection Area: 120° horizontal, 100° vertical; up to 6m range
  • Temperature Range: -20°C to 60°C, Accuracy: ±0.2°C
  • Humidity Range: 0% to 100% RH, Accuracy: ±2% RH
  • Power Supply: 4000 mAh ER18505 Li-SOCl2 battery, up to 5 years life
  • Dimensions: 73 x 73 x 26 mm (without PIR cover), IP30 ingress protection


Summary: The WS203 Motion & TH Sensor offers efficient, real-time environmental monitoring with its dual sensors, providing valuable data for smart offices, buildings, and hospitals, enhancing both safety and comfort.