Digital fan speed controller GRC 100 AT

The GRC digital fan speed controller is a temperature and relative humidity dependent speed controller for areas with inlet and exhaust air flow. Minimum motor speed, relative humidity/temperature and negative pressure setpoints can be adjusted by front panel po- tentiometers. 

The  GRC  has  an  internal  slide  switch  for  choosing  only  temperature  setting  or  relative humidity and temperature setting. Minimum and maximum speed can also be adjusted internally. There is a separate on/off switch with the possibility to bypass or to branch off 230 Vac. The controller is overvoltage protected by a varistor and has a built-in overcurrent fuse. 

The GRC uses digital relative humidity/temperature sensor FLTS-RH-010 or the analog temperature sensor FTSP-500-010, sold separately.