• 120-decibel alarm, Everything you need is included in the box, Low Battery Indicator.

These Philips Battery-Operated Window and Door Alarms provide a simple-to-use, cost-effective security solution to protect you and your family. Thanks to reliable magnetic sensors and 120-decibel alarms, a would-be intruder will think twice about entering your home. This set of four user-friendly alarms will provide you with the extra coverage you need. You can also choose between alarm or chime modes with the flip of a switch. When installed and armed, the alarm will activate if the window or door is opened, alerting you and deterring unwanted visitors. The simple, wire-free design of these alarms are perfect for homes, apartments, dorm rooms and offices alike. Use the included double-sided ing tape to attach them to your window or door of choice within minutes — each alarm is powered by four LR44 button batteries (included). Experience great peace of mind by adding a dependable layer of security to your home with these Philips Battery-Operated Window and Door Alarms! * 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 closed * User 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 home * Easy Install – Experience completely wire and hassle-free ing with the included double-sided tape, everything you need is included in the box * Battery Operated – Powered by four long-life LR44 button batteries (included) and features a battery test button and low battery indicator to keep you notified of current power levels * Peace 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