Sentrol 2757D-L Magnetic Reed Switch – Triple Contact Door Sensor

Need a reliable door sensor for an alarm or security system?

This Sentrol 2757D-L is a magnetic reed switch with triple contact.

Model 2757D, brand new.

It's a simple door sensor—mounts on the frame and door, triggers when opened.

Solid Sentrol quality.

If you're building or repairing a security setup, grab this.