... lift,convenient for driving in and out.PLC control system,simple operation,you only need to press the NO ... stable and reliableChain-equalization systemSingle manual or e-lock release system,safe and relaibleWear-resistant,heat-resistant and high strength ... sure no oil leakageSolenoid valve has the emergency manual lock release functionOptional 24v control box, solenoid valve and electromagnetOptional ...