Features:  Wireless Design: smart thermometer hygrometer, allows you to monitor temp, humidity in real time from anywhere at home via mobile phone app, with 40m connecting distance.  Fast, Accurate Measurement: it precisely detects temp (-10℃~60℃, ℃/℉ switchable), humidity (0~100%RH), luminious intensity (0Lux~157000Lux), fast shows the measurements on LCD display.  Smart App Control: you can use it with other smart devices, add it to your intelligent home system, share it with your family to control together on phone app; more functions wait for you to experience.  Easy Placement: this small indoor temperature and humidity gauge, space-saving, lightweight, enables you to easily place it on desk, bedside table and more, very convenient.  Wide Range Of Application: temperature humidity smart sensor, helps to grasp environment condition, fast tackle changes, suitable for bedroom, baby room, living room, office, etc.    Specifications:  Material: ABS + electronic components  Color: white  Detection: temperature, humidity, luminous  Luminous intensity range: 0Lux~157000Lux  Temperature range: -10℃~60℃  Humidity range: 0%~100%  Standby current: 60.5uA  Power supply: 2 * AA battery (not included)  Wireless type: 2.4GHz  Support protocol: Zigbee 3.0  Network protocol: Zigbee IEEE 802.15.4  Wifi distance: 40m  Work temperature: -10℃~60℃ (14℉~140℉)  Work humidity: 0%~100%  Store temperature: -10℃~60℃ (14℉~140℉)  Store humidity: 0%~90%  Item size: 84*55*32mm / 3.30*2.16*1.25in  Item weight: 63g / 2.22oz  Package size: 10*8.5*5cm / 3.93*3.34*1.96in  Package weight: 90g / 3.17oz    Note:  Temp humidity sensor only, others in pictures are not included.  The temp humidity sensor, not wifi version, needs gateways.  Due to manual measurement, there may be deviation.  Due to lights or others, it may slightly differ from pictures.    Packing List:  1 * Temperature Humidity Sensor  1 * User Manual