... ,and hardening liquid 3. professional manufacturer 1. water cooling device kCL-03 technique parameter:1) input voltage: 3PH-380V ... Feature:1)digital auto-control, it has the function of manual, semi=auto,full-auto, heating-keeping-cooling device period to control.2) perfect function ... of protect itself. such as, over-voltage, over-current,lack of water, phase fail,etc.3)auto ...