Superior to other home security products, this premium white alarm looks great inside your home. When door pressure is applied, the extremely loud 120 dB alarm helps wake/alert homeowner or renter, helps deter intruders and possibly notifies neighbors (audible up to 1,000 feet/300M away). Features a non-skid pad to prevent door from opening while alarm sounds; ideal for bedrooms, hotels, apartments, dorm rooms, front doors, etc. No wiring needed; battery-operated (requires 1x9V battery). Provides battery status update with a low battery indicator.