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Edelrid Ohm Assisted-Braking Resistor

Edelrid Ohm Assisted-braking Resistor is an innovative friction solution for problems experienced by climbing partners with significant difference in weight.

A lead fall for a heavier climber can sometimes be risky if their partner has difficulty controlling their falls, and lighter belayers can be pulled off the ground and into the wall. The OHM can be installed at the first bolt in the safety chain and in the event of a fall, the rope friction is increased so that a lighter belayer can hold a heavier partner with more safety and less difficulty. The Ohm still enables smooth paying out and taking in of the rope when climbing and belaying and has no negative affect on handling. The Ohm was developed for use at both climbing walls and outdoor sport climbing venues.

With this device, it is now possible for climbers in the lower weight ranges to belay a lead climber, who is up to 100% heavier. The Edelrid Ohm is suitable for ropes with a diameter between 8.6 and 11 mm and is particularly beneficial for belayers with a body weighing upwards of 40 kg.


  • Should a lead climber fall at the first bolt, the OHM significantly reduces the risk of a possible ground fall
  • Belayer requires significantly less hand braking force to arrest a fall
  • Lowering a heavier climber is much easier to control
  • Includes maillon, quickdraw and carabiner
  • Recommended weight difference (lead climber > belayer): 10 - 40 kg
  • ISPO Show Award Winner 2016/17
  • Unique product 


  • Guide Mode: No
  • Number of Ropes: One
  • Carabiner Included: Yes
  • Handles Ropes from 8.9 to 11mm
  • Minimum weight belayer: 40 kg
  • Weight: 470g

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