1. professional manufacture 2. CE, CCC, RoHS certification 3. 10 years in this field 4. reliable quality and reasonable price CRANE CONTROL PUSHBUTTON, Position ... up to 5A as controlling start and stop of remote and widely used in wharf, machine tools, textile machineries, etc. Other specifications ... vibration frequency is 2-80HZ, the acceleration is 0.79; remote control switch