This powerful fan controller boasts some excellent new features including the ability to set maximum and minimum night and day speed settings. It also allows the sensor to be calibrated for both humidity and temperature and its green LED indication lights and screen automatically dim so no light source is visible. This fan controller gives you complete control over all aspects of the growing environment. It automatically controls both EC and AC fan speeds and with an inbuilt balancer, it controls both outtake and intake fans efficiently and conveniently. Designed for seamless use with the AC and EC fan range from Systemair Revolution, the Enviro Controller V2 is a user-friendly choice.