... as electric linear actuator,linear actuator,12v linear actuator,hydraulic actuator,electric actuator,mini linear actuator,linear motor,track ... actuator,DC 12V linear actuator,and track linear actuator. hydraulic actuator application dental chair,home furniture,recliners chair,lift ... relative humidity:20% to 80.Travel switch:inner.Drivetype:single motor drive.Altitude height:within 1000m.Life span≥25000 ...