App Support: Free For iOS and for Android mobile App For eWeLink. Sync Status: Real-time device status provided to App. Real-time monitor: Monitor real-time temperature humidity/humidity. Remote On/Off: Use high-precision sensors to turn on/off electrical equipment from anywhere. Share Control: Control your smart home together with your family. Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time. Auto Mode: Set Auto mode to turn on/off at a specified temp. range. Manual Mode: Set manual mode to turn on/off immediately. Trigger Smart Scene: The temp. value works as smart scene trigger conditions to trigger on/off other eWeLink devices. Voice Control: Compatible with for "Amazon" Alexa, for Google Home, for Google Nest. Waterproof with stainless steel temperature probe, high accuracy, wide usage in daily life. Input voltage: AC 85-250V, Micro-USB 5V input. Output: Signal output only, no voltage output. Input current: Max 10A Wireless Standard: 2.4GHz, 802.11 b/g/n Security Mechanism: WPA-PSK/WPA2-PSK Control mode: Mobile APP EWeLink Humidity: 5%-90%RH, Non-condensing Operating Temperature: 0ºC-40ºC Colour:White&Black Material:ABS<br><br>Specifications: B: switch + temperature and humidity sensor Package Contents: 1 x Smart Switch 1 x Temperature and humidity sensors<br><br>Specifications:A: switch + temperature sensor Package Contents: 1 x Smart Switch 1 x Temperature sensors 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.