【130dB Alarm & APP Alerts】Glass break alarms will sound a 130db alarm continuously for 30 seconds and you will receive an alarm notification via Tuya / Smartlife app at the same time. It can better ensure safety, scare off thieves, and remind the owner of danger and take timely measures. <br><br> 【Adjustable sensitivity】Wireless door window sensor works with your 2.4 GHz WiFi(Note: Doesn't support 5G WiFi). No hub required. Compatible with Google Play, Andriod and Ios System. Adjustable sensitivity from light touch to push or knock allows you to set according to your needs. <br><br> 【Easy Installation】No wiring needed and No Need to use complicated tools when installation, just use 3M glue to stick the alarm on any door, window or glass. <br><br> 【Low Battery Indicator】Low power consumption, Requires AAA*2pcs batteries, AAA batteries give these alarms great battery life, no need to replace the battery frequently. When the battery is running low, LED will flash and the APP will remind you to replace the battery, will not miss the safety protection at home. <br><br> 【For Your Safety】Ideal window alarms for your safety to deter intruder thief entry and alert of a potential break-in and scare away burglars. Also perfect glassbreak warning for your house, office, apartment, garage, dorm, RV, hotel and so on.