Constructed from robust metal, this magnetic switch alarm sensor ensures durability and reliability for both industrial and residential overhead doors, providing a secure solution for environments with wide gaps. Featuring a protective metal tube, this sensor is designed to withstand harsh conditions, ensuring long-lasting performance and reliability in securing overhead garage doors against unauthorized access. Epoxy sealed for enhanced water resistance, this magnetic switch alarm sensor offers superior protection against moisture and environmental conditions, making it ideal for use in a variety of settings. This versatile sensor comes with an adjustable L bracket, making it easy to install and suitable for most door-channel widths. Its flexibility allows for a hassle-free setup in diverse door configurations. Ideal for overhead doors with wide gaps, this sensor is perfect for both industrial applications and residential use, providing a dependable security solution that helps monitor and protect property effectively. Magnetic contacts are widely used in alarm systems (panels) to detect the state of a door. It consists of a switch part and a magnet part. When the door is closed, the switch is affected by the magnet and turns ON; when the door opens, the switch is no longer affected by the magnet and turns OFF, triggering the alarm. Contact type: NC (normally closed), switch turns OFF when door is opened Operation distance: ≥ 50mm Mounting type: surface mounting Maximum voltage: 28V Maximum current: 0.2A Maximum load: 3W Color: Silver Material: Metal The actual product may have slight color differences, which do not affect functionality. Package Contents: 1 x Magnetic Switch Alarm Sensor Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3cm.