• Works with nearly all standard, hardwired alarm systems
• Designed for use on Normally Open (NO) applications
• Use on doors, windows, and sliding doors
• UL Listed for security systems
• 3/4" Operation gap

The SECO-LARM SM-300Q/WH Surface Mount Magnetic Contact Switch is ideal for any normally open location and will send an alert signal to your security system when it is no longer in a normally open state. Simply mount the magnetic sensors on a door or window so that the two are in contact with each other when the door or window is closed. Breaking the connection between the two sensors will trigger an alert thus notifying your property's security system. Slotted mounting holes make it easy to adjust the distance between the magnet and the sensor, with a maximum operational gap of 3/4". Measuring 2.48" long and half an inch high, they can be attached with wood or sheet metal screws, sold separately. The switch is waterproof and mounted in a high-impact plastic case. The rhodium plated contacts handle up to 100mA at 100 volts DC and are rated for 50 million openings and closings. It can reliably operate in temperatures between -15°F and 160°F. The sensor's maximum operational gap is 3/4".

• Magnetic Contact Instructions (43KB)

1x - Set of Surface Mount Magnetic Contact Switches, Normally Open

1x - Owner's Manual

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