Resettable Bent Arm

Climbing detection device for the top part of fences or walls

An intruder that tries to climb the protection system will switch the device. The bent arms can be resettable manually or automatically. The maintenance for this system is very low.
Detection when climbing
At the top of it we can add as an option: Panels, Concertina, Instrumented fence or Detection net
Reliability: Very low rate of false alarm
No reparation after alarm detection
Resettable manually
Possibility to equip the access or wall



The bent arms are used to assure the detection when there is an attempt to climb or cross the protection system. They can be used at the top of instrumented fence (PERIFENCE) or sensor net (PERISTOP®), for the protection of walls and buildings. The bent arms are articulated in the two ways. A human force or climbing will make the mechanism rotate and will trigger an alarm. The resettable detection bent arms are made with a little opening switch that triggers an alarm when the bent arm is activated. The filling of the bent arms can be done in panels or razor wire / concertina.

OREP propose two options:

  • Automatic resettable bent arms. The bent arm comes back automatically in operating position without a human intervention.
  • Manual resettable bent arms. A human action is necessary in order to put back the bent arm in operating position.

Features and Advantages

  • Climbing detection
  • Articulation managed by micro-switch
  • Insensitivity on the weather condition
  • Very low rate of false alarms
  • Set up of the system at the factory further the needs a Low maintenance
  • No reparation after alarms


It exist simple or double bent arm (in Y or in V) The bent arm can be installed in different manner:

  • Vertical
  • Inclined oriented inside
  • Inclined oriented outside



  • Protection of instrumented fence from the range of PERIFENCE a Protection on detector net system PERISTOP®
  • Protection of the top part of the gates PERIGATE
  • Possibility of fusion with PERICOIL/ PERICOILACTIV / ACTIVCOIL a Protection of the top of the walls
  • Protection of the buildings