Features 1、APP Control Alert: Control your door and window sensor via the for Tuya Smart or for Smart Life APP. Receive real time alerts on your smartphone whenever a door or window is opened or closed 2、Versatile Application: This smart WiFi sensor can be installed on door, window, drawer, file cabinet, safe case, and other areas, catering to a wide range of needs for comprehensive security 3、Tape Installation: The smart door sensor comes with double sided tape for a firm and lasting attachment, making it suitable for placement on door, window, mailbox, refrigerator, drawer, and more 4、Low Battery Warning: Powered by 2pcs battery(not included), the door sensor is convenient and practical. When the battery runs low, it automatically sends a message via the APP to remind you to replace it 5、Compact Design: Featuring a simple and compact design, this door window sensor is easy to install and use, occupying minimal space, suitable for bedroom, garage, patio, and various other settings Specifications Item Type: WiFi Door Sensor Product Material: ABS Battery: 2 x 3A Dry Battery (not included) Weight: Approx. 43g / 1.5oz Package List 1 x Sensor Body 1 x Sensor Attachment 1 x User Manual 2 x Double Sided Tape