Feature:1. Enhanced Security: The door magnetic sensor slarm switch provides sensitive and reliable security for your home, garage, warehouse, or store, alerting you to any unauthorized entry.2. Durable Construction: Made of high strength zinc alloy and magnet, this sensor switch is built to withstand daily wear and tear, ensuring long lasting performance.3. NC Type Switch: The normally closed switch design ensures that the alarm sounds when the door is opened, providing an additional layer of security and deterrence.4. Easy to Install: With its simple design and included mounting screws, the sensor switch can be easily installed on any door or window, allowing for hassle free setup.5. Operating Distance: The sensor switch has an approximate distance range of 5070mm, providing flexibility in installation and ensuring accurate detection of door opening or closing.Specification:Item Type: Door Magnetic Sensor Alarm Material: Zinc Alloy, MagnetCurrent: 0.5AVoltage: 100VPower: 10WSwitch Type: NCNC means normally closed: when the magnets are sucked together, the circuit conducts (light on); when the magnets are separated, the circuit does not conduct (light off).Package List:1 x Sensor Window Alarm 1 x Magnet Block5 x Screws1 x English User Manual