Power: 3 phase 4 wires

Rated Voltage: AC 380/220V  ±10%

Working Condition：temperature at 0-60℃， relative humidity （RH）≤85%, non-corrosive air.

Temperature control:  0-50℃

Time control : working time(1 second to 99 hours);off time(1 second to 99 hours)

Feature: simple operation，all 4- stages have separate control button as Auto-Off-Manual.Stage-1,2,3 are temperature control, Stage-4 is time control. Stage-1,2,3 could set different temperature. When inner temperature below the minimum setting index, three groups of fans under stage-1,2,3 will not work,No.4 group will start on or stop by stage-4 time control. When inner temperature increased, three groups of fans will running as per temperature setting, meanwhile No.4 group fans will stop. Accurately achieve cooling function under high temperature,and ventilation function under low temperature.