WS203
Combining a PIR motion detector with an accurate temperature and humidity sensor, the WS203 shows whether a room is in use and what conditions are like inside it from one battery-powered device. Motion is detected up to 6 m away, temperature to ±0.2°C and humidity to ±2% RH, and movement can trigger an immediate environmental reading. Interchangeable lens covers narrow or widen the detection zone, 1,000 readings are stored locally with retransmission, and D2D lets it control lights or HVAC directly. One lithium cell runs for over ten years, it fixes with tape or screws and reports over LoRaWAN. Typical applications are offices, hospital rooms and hotel guest rooms.
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