WN31(WH31) Multi-Channel Temperature and Humidity Sensor

❥❥Wireless Thermometer Hygrometer: this sensor measures current temperature and humidity with digital display; supports up to 8 channels allowing you to monitor your whole house(additional sensors sold separately) wirelessly [Accessory Only, Can Not Be Used Alone] ❥❥Live Data on Free APP: requires a GW1000 WIFI Gateway(★★sold separately);After the WIFI configuration, the live multi-channel temperature and humidity data can be viewed directly on the WS View App ❥❥Remote Monitoring & Email Alerts: supports uploading to our free Ecowitt Weather server(ecowitt.net) to view all the data graph / download history records / set Email alerts for all the sensors on the website(requires the GW1000 gateway) ❥❥Up to 8 channels supported: allows you to track temperature and humidity at up to 8 locations (additional sensors sold separately), can be placed at your living room/bedrooms/baseroom/garage/guitar room/baby room and more; Each channel name can be customized as you like ❥❥Long Transmissio