Material and build Constructed from durable ABS plastic for a clean, lightweight, and dependable housing. Core functions and benefits Door alarm bell and door chime: provides accurate, precise detection of door and window status and gives a clear audible alert when a monitored entry is opened. Window sensors: detect window openings to help protect against unauthorized access or accidental entry points. Sensor for home security: improves awareness of entry points so you can respond quickly to possible intrusions or hazards. Suitable for DIY enthusiasts and professionals: designed to meet the needs of both individual installers and security technicians who require reliable door and window status detection. Why customers need it Immediate notification of door or window openings reduces response time to potential security breaches or accidents. Detects and signals changes in door/window status to help protect homes, offices, shops, and pool access areas. A practical component of basic security setups where monitoring of entry points is required. Key attributes Function: door alarm bell, door chime, and window sensors for realtime status detection and audible alerts. Material: ABS housing for durability and a neat appearance. Performance: accurate and precise detection of doors and windows to reliably indicate open or closed status. Compatibility: designed for monitoring standard doors and windows and for use in residential, commercial, and retail environments. Typical applications Home: monitor entry doors and basement or patio windows to alert household members to unexpected openings. Office and retail: keep track of doors and displaywindow access to protect stock and control entry during business hours. Pool and safety doors: use as part of a system to monitor pool gates or other safetycritical doors that must remain secured. Design and appearance Lowprofile, professional look that fits residential and commercial spaces without drawing attention, while contributing to overall security coverage. What it does not change Retains its primary role as a sensor and audible alert device for doors and windows, without altering existing security systems unless integrated by the installer.