Ohm Electric Security Buzzer/Alarm, White, Dimensions (approx.): Main Unit: 5cm W X 10.1cm H, Magnet: 1.2cm W X 4.5cm H X 0.9cm D

A loud alarm sounds when it detects glass breakage or impact, or when a window or door is opened. The alarm sounds at approximately 90dB (measuring distance: 1m) for approximately 20 seconds. Battery-powered, no wiring required. Easy installation with adhesive backing. The unit is approximately 9mm thick, making it suitable for most windows. Compatible with uneven glass. Note: Installation may not be possible on decorative glass with large irregularities. The adhesive backing features the words "24-hour alert" printed on it, making it visible from the outside when attached to clear glass, aiding in security. When turned on, the set confirmation light flashes three times and a confirmation beep sounds. Size: Approx. Dimensions: Unit: 5cm W x 10.1cm H x 0.9cm D; Magnet: 1.2cm W x 4.5cm H x 0.9cm D Style: Open & Impact Detection Package Weight: 0.06 kg