Set of 5 Unopened Unused Easy to apply! Vibration-detecting, loud-volume security alarm (130dB) Easy and reliable security measures to protect your precious family and property. When vibration is detected on windows or doors, a 130dB loud alarm immediately activates! It strongly deters burglars and suspicious individuals, preventing damage. Recommended for places like: ・Entrance/back door ・Balcony windows ・Storage sheds/warehouses ・Offices and workplaces, etc. Excellent ease of use: ・Easy installation, just stick with double-sided tape ・**Battery-powered (no wiring required)**, ready to use from the day it arrives ・Small, lightweight, and discreet design for peace of mind Reliable high performance: ・130dB loud alarm ・Alarm sounds for approximately 30 seconds when vibration is detected ・Easy to handle with automatic mute function 【Product Specifications】 ● Size (per unit): Approximately W5 x D1 x H6.5cm ● Weight (per unit): Approximately 22g ● Material: ABS resin ● Power supply: LR44 batteries x 3 (included) ● Alarm type: Vibration detection type ● Country of manufacture: China