Hign-concerned Chemical:None Communication method:zigbee Camera Equipped:No State of Assembly:Ready-to-Go Model Number:MS24032401 Compatibility:All Compatible Product name:Zigbee Rain Sensor Protocol:Zigbee 3.0 Kindly note : the device must be working with a Zigbee 3.0 gateway. Color: As Shown Material:Plastic Package Contents: 1 * Zigbee Smart Rain Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.