Fangrui Product Details Sonoff Ewelink Temperature Humidity Sensor Zigbee Indoor Thermometer Hygrometer Smart Home For Alexa Google Assistant, Snzb 02 Sonoff Snzb-02 Is A Zigbee Temperature And Humidity Sensor That Can Seamlessly Work Withsonoff Zigbee Bridgeto Track The Temperature And Humidity Change In Your Home, Which All Real-time Readings Can Be Checked On Ewelink App. Better Still, You Can Set A Condition In The Smart Scene That Is The Fan Is Turn On/off When The Temperature Reaches The Limit Value, Or The Dehumidifier In Your Room Starts Working Once The Humidity Is Over Higher, Helping Prevent The Growth Of Mildew And Allergens. You Can Set A Smart Scene To Trigger Alerts Through Events Like High/low Temperature, High/low Humidity Conditions And More. Device Sharing Function Makes Your Kids, Family, And Even The Neighbors Informed About The Environmental Conditions Of Your Home With Their Mobile Phones. The Camera Is Available On The Sensor To Make You Know What’s Go On In Your Home. It Reserves Time For You To Take Actions If A Firehazardarises. It Is A Battery-operated Sensor That Can Be Placed In Any Corner Of Your House To Monitor The Room Temperature And Humidity. Installation Without Any Tool, Simply Stick The Sensor On The Surface Of The Wall Or Device And See It Nicely To Work For You! Note:the Battery Level Will Be Updated Every 1-2 Hours In Order To Save Power Consumption. If The Device Battery Is Not When You Change A New Battery, Please Check It Again 1-2 Hours Later, Meanwhile, Frequently Enter Pairing Mode May Cause A Lower Battery Level Display. Real-time Temperature & Humidity Feedback Measure The Temperature And Humidity In Real Time, And Sync Data To Your Mobile Phone In No Time.