Kickass Heavy Duty Garage Roller Shutter Contact Sensor Security Alarm Switch With Long Armored Cable Hella Secure Magnetic Trigger Built Tough And Reliable

Packaged Heavy Duty Roller Shutter Alarm Sensor Units
✔️ Magnetic security sensor built for heavy commercial doors

This overhead mounted contact switch acts as a solid trigger for security alarms on warehouse roll-up doors and industrial garage entrances. Each pack contains just one detection module designed for straightforward DIY installation without drilling complex circuits or hunting down extra mounting hardware. It pairs a stationary magnet with a housing unit to monitor entry points and alert you whenever someone shifts the mechanism from its sealed position.

✅ Handle operates across three inch or seventy six millimeter clearance zones without false triggers
✅ Cable assembly features thirty point seven five inch or seventy eight centimeter reach wrapped in twenty one fifth inch or fifty five point eight centimeter armor
✅ Stationary bracket spans three point two three by two point one seven by one point two two or eighty two by fifty five by thirty one millimeters total
✅ Detection contact panel measures four point one three by one point seven seven by zero point three nine or one hundred five by forty five by ten millimeters wide
✅ Dry contact design prevents direct current flow so it connects safely to low voltage alarm systems only

💡 Why does a magnetic security contact outperform traditional microswitches on rolling shutters?
Dry circuit operation keeps your alarm panel stable since the trigger relies purely on physical proximity instead of fragile internal contacts that burn out quickly.
- Sealed chamber blocks dust and moisture buildup that usually damages cheap plastic housings
- Armored sheathing stops rodents and debris from severing the connection during routine maintenance
- Clean signal delivery reduces power draw on control boards so older panels handle multiple sensors without tripping
This setup delivers reliable perimeter tracking wherever heavy vehicles or loading docks cause constant vibration.