Features: Equipped with touch + vibrations double sensors and 120dB alarm, this door handle alarm offer three sensitivity levels and two alert modes (buzzing/alarm) for instantly intrusion detection without complex wiring. Features three adjustable sensitivity settings, a convenient sliding switches (buzzing/ALARM/OFF), and battery powered operations (requires 3pcs 1.5V batteries, not included) for flexible Safety customization. Designed for homeowners, renters, and apartment dwellers seeking enhanced protections against unauthorized access to doors and window. Ideal for monitoring entry points like patio doors, bedroom window, or garage entrances where sudden vibrations or tampering may occur. Compact yet powerful, this plastic built Safety device activates within 0.5 seconds of detected motion, delivering ear piercing alerts to deter potential intruders effectively. Specifications: Component: ABS Alarm mode: alarm/buzzing Sensitivity: High, Mediums, Low Alarm: 120dB Battery: 3Pcs LR03 battery (not included) Standby: 1 year Size:Approx.139mm/5.47''x68mm/2.67''x18mm/0.7'' Package Includes: 1Piece Window Restrictor note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.