Features: Our quality surface-mounted door magnetic sensor is designed to provide reliable detection and alarm capabilities for window and door security system. Its durable construction ensures long-lasting performances and peace of mind. Experience convenience with our door contact switches, which is perfectly suited for window and door alarms as well as burglar detectors. Its easy installation process makes it a hassle-free solution for enhancing your home security. Build to last, our surface-mounted magnetic door sensor offer effective monitoring for window and door access points. With its robusts design, it provides dependable detection and ensures the safety of your premises. Enhances the security of your home with our easy-to-install door contact switches. It is specifically designed for window and door alarm system, providing a reliable and efficient meansof detecting any unauthorized entry. Our versatile surface-mounted door magnet sensor is an exceptional choice for effective detection in window and door intrusion alarm system. Its advanced technology ensures accurate sensing, allowing you to safeguards your property effectively. Specifications: Material: ABS Flame retardant Sensing distance: 15-20MM Operating voltages :100V Alarm currents :500mA Currents :0.5A Signal output: normally closed/normally open conversion NC/COM Fixing method: surfacing mount Connection mode: connection base Size: 55×22×11mm Package Includes: 1 set Magnetic Door Sensor note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.