Features 1、Enjoy your smart life, when you leave the house, it will send you a notification after sensing the opening or closing of the door/window, you can easily find the intruder in time. 2、You can share the device with your family and track the history of sensor activity. 3、Compatible for Alexa and for Google Home. Just use your voice to control connected devices through for Google Home/for Alexa, or you can use other smart devices compatible for Smart Life or for IFTTT to perform automatic control. 4、Convenient for you to open or close doors, window, cabinets, drawers or any place that needs notification. 5、Easy to install, no need for complicated tools, the sensor can be installed just using double-sided tape. 6、You can download the application for Smart Life from for GooglePlay to add a device, which makes it easier to detect the status of doors/window. 7、Work with for Tuya, it can be used in conjunction with other products supporting for Tuya. 8、Push the door open and close notifications through the mobile phone, with tamper alarm and low battery alarm. Specification Condition: 100% Brand New Item Type: Door Window Sensor Material: ABS Color: As picture shown Transmitter Size: Approx. 69.5 x 24 x 20mm/2.7 x 0.9 x 0.8in Magnetic Stick Size: Approx. 43 x 14.8 x 11mm/1.7 x 0.6 x 0.4in Battery: 2 x AAA 1.5V (Not Included) Standby Current: ≤5uA Alarm Current: ≤160uA Low Point Undervoltage: ≤2.7V Magnetic Control Distance: ≥15mm Protocol: IEEE 802.11b / g / n Working Temperature: -10℃-40℃ (14℉-104℉) Humidity: 20%-85% Storage Temperature: -10℃-60℃ (14℉-140℉) Storage Humidity: 0%-90% Standby Time: 6-12 Months Wireless Type: 2.4GHz Package List 1 x Door Window Sensor (1 x Transmitter, 1 x Magnetic Stick ) 2 x Tape 1 x Manual