New with a large heat sink! Better quality.
The 10a min. Max.- Hyst.- controller is a temperature-dependent speed controller for ventilated rooms for one or more exhaust air fan. The controller keeps the room temperature constant and prevents the set minimum speed and the maximum number for reducing noises. The hysteresis determines the control range. It is easy to use, the desired temperature, minimal speed, maximum speed and hysteresis is set to four buttons.

This reliable fan troller comes completely in a waterproof housing, plug with a folding lid and a digital small voltage sensor, which makes it complete controller for moist rooms. The sensor is delivered with a 4 meter long cable and can be expanded up to 50 meters if necessary.
Dans of the 10A protection also suitable for large fans from 600 watts.