We have 4 brand new, open-box HE-6800 Series humidity/temp controllers available for sale. Asking $220 each.
The specs:
Reads humidity from 0-100% (±3% accuracy)
Temp sensing included
Runs on standard 14-30V DC or 20-30V AC power
Easy hookup with screw terminals
Clean white wall mount design
1000 Ohm nickel sensor element