FEATURES DUAL-PURPOSE VIBRATION SECURITY SYSTEM - Experience peace of mind with a high-sensitivity alarm designed to detect both subtle tremors and forced entry attempts instantly. EARLY SEISMIC DETECTION WARNING - Give your family precious seconds to react during a tremor with high-sensitivity sensing that outperforms standard household security gear. INSTANT FORCED ENTRY DETERRENCE - The omnidirectional sensor captures high-frequency impacts, triggering a high-decibel alarm to scare away intruders the moment they touch glass. LOW-PROFILE SECURITY SHIELD - Designed to be unobtrusive yet highly effective, the sleek white finish complements any surface while maintaining its professional alert status. VERSATILE SECURITY GUARD - From main entrances to delicate glass cabinets, this vibration sensor provides consistent coverage wherever security is non-negotiable. SPEC Color: White Size: 98mm (3.86 inches) x 52mm (2.05 inches) x 22mm (0.87 inches) Material: Plastic Weight: About 60g (2.12 oz) (excluding battery) Alarm Volume: About 110dB Power Supply: 1 x 9V battery (not included) Sensing Mode: Vibration sensing PACKAGE INCLUDES 1 x Wireless Door Window Vibration Alarm NOTES Please ensure a 9V battery is correctly installed with proper polarity before turning on the device. If the alarm continuously buzzes or the volume decreases significantly, please replace the battery immediately. Remove the battery if the device will not be used for an extended period to prevent damage.