CallToU Window Door Alarms for Home Kids Safety Wireless 120 Loud dB Alarm Sensors with Batteries 8 Magnetic Sensors Color:3 PACKS the sound alarm can work

the sound alarm can work for about 120 days

There are three buttons on the main unit

Instructions for Use

You can freely adjust your favorite music and appropriate volume

CallToU Window Door Alarms for Home Kids Safety Wireless 120 Loud dB Alarm Sensors with Batteries 8 Magnetic Sensors Color:3 PACKS the sound alarm can workProduct Description Door Alarms When Opened: Door alarm sensor can detect the opening closing of doors and windows, guarding security of house, apartments and shops, etc. Easy Installation: Wireless door alarm helps you save the trouble of wire installation, This door and window sensor alarm security kit come with self adhesive pads so no tools are required, just had to stick the door alarm sensor on the door or window. Different Working Modes to