1. Real-time Remote Monitoring: Whenever and wherever you are, once vibration sensor detects shock or motion, you will receive a push notification by smart phones in Tuya Smart Life App. Keep your house safe all the time. 2. Intelligent Linkage Alarm with More Sensors: When detect motion, vibration,drop,light is on automatically for smart automation; or even intelligently linkage to your smart curtain switch for opening curtains when detecting vibration. Working voltage:DC 3V. Standby current:less than equal 10uA. Alarm current:less than equal 20mA. Communication:ZigBee Transmission distance:10-30 meters(no obstruction indoor). LED indicator:YES. Battery:1.5V AAA dry batter x 2 (not included). Working temperature:-10-50. Working humidity:less than equal 95% (no condensation). Update frequency:half an hour. Note:TheZigBee Version model requires a Tuya ZigBee gateway to function properly. Colour:White Material:Plastic Package Contents: 1 * Smart Vibration Sensor 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.