Photo 1 of Smart Door Sensor 2 Pack, TESSAN WiFi Window Contact Sensor Compatible with Alexa, Google Assistant, No Hub Required, Trigger Phone Notification, Phone Alarm, Programmable with Smart Life Devices

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Photo 1 of Smart Door Sensor 2 Pack, TESSAN WiFi Window Contact Sensor Compatible with Alexa, Google Assistant, No Hub Required, Trigger Phone Notification, Phone Alarm, Programmable with Smart Life DevicesPhoto 2 of Smart Door Sensor 2 Pack, TESSAN WiFi Window Contact Sensor Compatible with Alexa, Google Assistant, No Hub Required, Trigger Phone Notification, Phone Alarm, Programmable with Smart Life Devices