Wsdcam Door and Window Security Alarm Wireless Time Delay Alarm Magnetic Triggered Door Open Chime for DIY Home Security

Door and window alarm helps deter intruder/thieves effectively by 108dB loud alarm, also can be door open chime help notify you if children/pet or others are coming/ going
Magnetically triggered door alarm sensor suitable for Doors, Windows, Sliding Door/ Window, Freezers and Refrigerators
General Alarm, Constant Alarm, Time Delay(Closing-door Alert ), Doorbell 4 in 1 Multi-Function, you can set the appropriate mode according to your need
Easy to press off/on button to power off/on when you don