- Safer requires significantly less hand force to stop a fall.
- Lowering a heavier climber is significantly easier to control.
- It is installed in the first hook of the safety chain.
- In the event of a fall onto the first hook, the device reduces the risk of a potential ground fall.
- No restrictions on handling during lead climbing (no rope friction when paying out rope)
- Recommended weight difference (climber > belayer): 10 - 40 kg

This product is the "Edelrid OHM" series resistor.
Technical data:
Weight: approx. 490g.
Rope compatibility: Single ropes from 8.5 to 11 mm.
Minimum weight for safety equipment: 40 kg.
The Edelrid OHM is a belay device that has been established for many years in indoor and outdoor climbing. It increases rope friction in the event of a fall, thereby compensating for weight differences between a heavier climber and a lighter belayer. The maximum weight difference between climber and belayer can be up to 40 kg with the OHM. (Manufacturer's information: Link to the Edelrid website )
The Edelrid OHM combines several advantages in one device:
Not familiar with the Edelrid Ohm yet? Here you can see its advantages in practical use: YouTube Link