Enhance your home security with the Tuya Smart Door Sensor. This compact and sleek black sensor efficiently detects when your doors or are opened or closed. It seamlessly is fully compatible with the Smart Life app, allowing you to monitor your home from anywhere. Stay connected and secure with real-time alerts directly to your smartphone. Easy to install and manage, this sensor is an essential addition to your smart home security system, ensuring peace of mind. Use 1.5V AAA battery (not included in shipment) Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:Black Material:ABS Package Contents: 1 * Smart Door Sensor kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.