Magnetic Contact Sensors
The foundation of perimeter security. Understand how magnetic reed switches operate, the difference between Normally Open (NO) and Normally Closed (NC) circuits, and where to deploy them.
Read GuideMaster Your Perimeter Security
Expert insights on door sensor technologies. From hardwired commercial overhead contacts to smart residential Wi-Fi switches, find the exact hardware specifications you need to secure any entrance.
Door Sensor Guides
Recessed Door Sensors
When visibility is a concern, concealed recessed sensors hide within the door jamb. Learn about installation tolerances, wood vs. metal door complications, and specialized drill bits.
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Surface Mount Sensors
The most accessible security upgrade. Compare adhesive tape versus screw mounting, evaluate gap tolerances, and discover how to handle misaligned door frames.
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Smart Wi-Fi Door Sensors
Bring your security to the cloud. Evaluate battery life constraints, 2.4GHz vs 5GHz networking limits, notification latency, and smart home ecosystem integrations.
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Commercial Overhead Door Sensors
Built for harsh environments. Explore wide-gap floor mount sensors, extruded aluminum housings, armored cabling, and track-mounting techniques for warehouse roller doors.
Read GuideWhy Sensor Selection Matters
3/4"
Standard Gap Tolerance
Exceeding the maximum operating gap is the leading cause of false alarms in standard surface mounts.
2.4GHz
IoT Standard
Most smart sensors lack 5GHz support due to the superior wall-penetration capabilities of lower frequencies.