Elf - fan controllers

6-12amp fan controllers for controlling fans, in and out, up to 12amps (2x6amp). Simply set the dial to the temperature you'd like fan to change gear. Then set the 2 speeds - high and low. When the temperature drops below the one you've set the fan will drop to the low setting. When the room temperature increases beyond the temperature you've set, the fan will switch to the higher setting. Great for keeping plants warm in the dark period and saves money in heating bills.  

The TFC8 has an external sensor with a cabel length of 5 or 10 metres. With the TFC8 you can run an exhaust fan of 6000m3.With the connecting cable you can join together a maximum of 8 of these units to run a maximum of 64amps on the one thermostat!