Hi-ox240 is the unidirectional room speed governor that applies to both passenger and freight elevators. If the elevator descends with excessive speed, the descending brake will be used to support the general descending safety gear, enable the safety gear, and stop the car, playing the role of descending over-speed protection. If the elevator ascends with excessive speed, the over-speed switch can be turned off to cut off the power and stop the car, playing the role of ascending over-speed protection. Rated speed: equal to or lesser than 2.5m/s Wire rope diameter (mm): 6, 6.3, 8 Sheave diameter (mm): 240 Tension force: equal to or more than 1000n Super switch voltage grade: ac220v