General description This Wireless Home Alarm system features a door and window contact sensor that emits a loud 110dB alarm when triggered. It is designed to enhance home security, prevent children from sneaking out, and provide protection for garages, mailboxes, and businesses. The system includes four distinct alarm modes to suit various needs. Technical specifications Alarm loudness: 110 dB Dimensions: 30 mm x 18 mm x 100 mm Power source: 2 AAA batteries (not included) Installation Easy installation with self-adhesive pads, no tools required Simply stick the sensor and alarm onto the door or window Double-sided tape is used for mounting Usage Can be used as a door stop alarm, pool door alarm, garage door alarm, or sliding door alarm Quickly detects if doors or windows are opened Four alarm modes: Ordinary Alarm Mode, Wireless Doorbell Mode, Alarm and Stop Mode, Door Close Reminder Mode Other information Test the alarm by activating it and opening/closing the door or window to