Enhance your home or office security system with this reliable Door Window Sensor set, designed for easy installation and dependable operation. Each sensor pair features a magnetic switch mechanism that operates without requiring any external power supply, providing efficient and maintenance-free protection for your doors and windows. Ideal for wired or wireless alarm control panels, these sensors connect directly via their GND and NC ports, ensuring seamless integration into your existing security setup. Key Features: · Magnet and Switch Design: The magnets are positioned close to the switch when closed, creating a circuit path for current flow. When separated, the switch opens, triggering the alarm. This simple yet effective design guarantees accurate detection. · No External Power Required: These sensors operate without batteries or external power, enhancing reliability and reducing maintenance. · Normally Closed Switch Output: The NC output type ensures the circuit is complete when doors or windows are closed, providing immediate alerts when opened. · Suitable Working Distance: Offers a working distance of 15mm ± 5mm, making it compatible with most standard door and window frames. · Durable Construction: Designed to withstand over 1 million operations, ensuring long-lasting performance. · Electrical Specifications: Supports a switching pressure of up to 100VDC and a load current of 300mA, suitable for most alarm systems. · Important Usage Note: Not recommended for iron doors or frames, as magnetic interference may reduce sensor sensitivity. Specifications: · Working Distance: 15mm ± 5mm · Switching Pressure: 100VDC · Load Current: 300mA · Life Span: 1 million cycles · Switch Output: Normally Closed (NC) · Package Weight: 91g / 3.2oz Package Includes: · 10 Pairs of Door Window Sensors These door window sensors offer a practical and efficient solution for improving security monitoring in homes and offices. Their straightforward installation and robust design make them an essential component for any reliable alarm system.