Smart Door Sensor 2 Pack, TESSAN WiFi Window Contact Sensor Work with Amazon Alexa, Google Assistant, No Hub Required…

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Smart Security Sensor: TESSAN door and window alarm sensor is designed to monitor the open or close status of any entrance; An alert notification will automatic send to you in 10 seconds once the sensor triggered; Ideal for front door, window, baby room, garage and more; Door status and battery power can be check in app; No hub required; No extra cost; A must have security system accessories
Programmable Sensor: Extend your smart home automation with TESSAN wifi door sensor; Set up your smart routines in app; Automatically turn on your smart wall switches or lights when door opened; Automatically turn off your air-condition when window opened; More smart devices can be sync as long as they compatible with Smart Life app; Support 2.4Ghz Wifi only, dual-band (2.4G and 5G) WiFf need to set a separate 2.4G channel
Hand-Free Voice Control: TESSAN wifi garage sensor is compatible with Amazon Alexa and Google Assistant; Simply give a voice command to check the open or close status instead of going down or picking up your phone; Your voice device will work as chime, siren or alarm when the sensor triggered; Saving your operation time and make your smart home life more convenient and easier
Peace of Mind: All alarm record history can be check in app; The smart window sensor is built-in low consumption module, 2*AAA Alkaline battery provide 1-year monitoring; All the statuses of doors and windows will be displayed simultaneously in the app; Share the device to your families, they can check the status and get notified at the same time
Note: The door sensor itself does not include a chime; However, you can program it to some smart voice devices via Smart Life app; When the sensor triggered open or close, the voice devices will perform as an alarm or bell in 10 seconds