Power: 3phase 4 wire
Rated Voltage: AC 380/220V  ±10%
Working Condition：temperature at 0-60℃， relative humidity （RH＿le;85%, non-corrosive air.
Temperature control:  0-50?br /> Time control : turning on setting from 0.1seconds to 990hours   
turning off setting from 0.1seconds to 900hours
Feature: simple operation，all 4- stages has 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 cooling function when high temperature, ventilation function when low temperature.
Generally apply to control exhaust fans 、cooling pads . the one stage and the second stage connect the big fans which are installed into the gable wall ,it will control the big fans by two temperate stage ,with the rising of temperature ,it will turn on at the same time; the third stage is used to control cooling pads , similarly ,when temperature is high ,it will turn on automatically ,and turn off when low; the fourth stage connect to the small fans in the flank wall or gable wall ,it will automatically turn on or off as per the setting time ( time set freely) when the indoor temperature below the required , it will turn off the time control system when the indoor temperature above the required, the one stage、the second stage and the third stage will start on at the same time