Sensing vibrationImmediate remote SMS notification to remind you that the alarm is emitting 130 decibels The alarm sound attracts the attention of people around and scares people [Ultra-slim Window Alarm]: Vibration sensor, powerful alert sound. There is a vibration sensor in the window door alarm that detects glass breaks and when windows being opened with force. Immediately alerts you to potential break-ins and protects your safety. [Simple Design]: Small size, do not take up space. The operation is very simple. When the switch is pushed to "ON", the indicator light will flash 3 times. Its sensor detects vibration and emits a 130 dB alarm. Switch to "OFF" can turn off the alarm. [Easy to Install]: No tools are required. No need to plug in. The product 2PCS AAA batteries (not included)Tear off the double-sided tape and past it on the window or wherever needed. [A Wide Range of Applications]: Suitable for a of occasions and environments. Such as glass doors and windows, drawers, cabinets, , home security doors, RVs, etc. Product weight:58G Alarm volume:130dB Power Suplly:2xAAA battery(Not included batteries) Standby current:Less than 10uA Low battery prompt:2.3V0.2V Can be used with Tuya APP Function: 1. High pitch siren 2. Vibration sensing 3. Low power consumption reminder 4. Remote notification 5. Simple installation 6. Multiple scene applications Colour:White Material:ABS Size:74x13mm Package Contents: 1 * WiFi Door 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.