Safe and Secure – Ward off would-be intruders with a 120-decibel alarm triggered by a high-quality magnetic sensor, or choose for a chime to sound when windows or doors are opened and closedUser Friendly – Features an easy-to-use OFF/chime/alarm switch on the side of the alarm to let you choose your preference of alert, comes in a set of four to provide extra coverage for your homeEasy Install – Experience completely wire and hassle-free mounting with the included double-sided tape, everything you need is included in the boxBattery Operated – Powered by four included LR44 button batteries and features a battery test button and low battery indicator LEDPeace of Mind – This home security product is designed to fortify your home with a reliable layer of protection, empowering you to live your life free of worry