1.Vibration sensor alarm, alarm:130dB 2.Ultra Long Standby:2PCS AAA Batteries(include) 3.Low power reminder: when the battery voltage is lower than 3V, the LED indicator will flash to remind 4.Remote notification: When you are not , you can also know whether and windows in your home are opened 5.Alarm can works with Tuya,Smart Life,Google Assistant and 6.Paste Type,easy installation How to use: 1. Pull out the insulation sheet. 2. Turn the power switch to "on". 3. Press and hold network button for , Led light is flashing quickly and then enter the distribution state. 4. Vibration sensitivity adjustment: switch upward, sensitivity increased, switch downward, sensitivity decreased. Colour:black Material:plastic Size:74 x 13mm Package Contents: 1 * burglar alarm Only the above package content, other products are not included. Note: Light 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.