Hydroponic Fan Speed Controllers Automatic fan controllers provide control over the temperature of the growing environment. SMSCOM Temperature Controllers Phresh HyperFan Speed Controller Replace (3 pin) $31.10 Phresh Digital HyperFan Speed Controller with 5m cable (RJ-11) $34.70 Phresh Easy Fan Controller $158.00 Hybrid Controller MKII 4A – SMSCOM (on SALE!) $489.95 $299.95 Hybrid Controller MKII 8A – SMSCOM (on SALE!) $599.95 $399.95
