2Pcs Freezer Door Alarm, Safety Window Alarm, 3/15/30/60 Seconds Adjustable Delay Wireless Fridge Alarm, 4-In-1 Door Sensor Chime Door Open Alarm Loud 108dB

Modes:

1. General alarm mode:

Press general alarm button and enter the corresponding mode. It sounds siren alarm when doors/windows opened, and stops once door/window closed.

2. Constant Alarm Mode:

Press constant alarm button and enter the corresponding mode. It sounds siren alarm at least 30 seconds when triggered, constant alarm even door closed.

3. Time Delay Mode (Closing-door Alert Mode):

Press time delay button and enter the corresponding mode. It sounds "Di-Di-Di" from 0 dB to 108 dB when doors/windows opened 15 seconds later (Can set the delay time 3/15/30/60 seconds, the factory default is 15s). Stops when they are closed. It wouldn?t beep when the door/window was immediately opened.

4. Doorbell Mode:

Press doorbell button enter the corresponding mode. It sounds "Dingdong" when doors/windows opened.Just press the button to set the appropriate mode according to your need.