Superior to other home security products, this premium white alarm looks great inside your home. The extremely loud 120 dB alarm helps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors (audible up to 750 feet/230M away). Features 3 adjustable settings (off/alarm/chime); chime mode is ideal to alert you when children or guests are coming and going when you are at home. Easy installation; no wiring needed, plus sensor mounts on either side of alarm for easier set up; 4xLR44 batteries included. Provides battery status update with a low battery test button.