TrolMaster® MBS-TH 3-in-1 Sensor for Hydro-X only
3-in-1 Temp/Humid/Light sensor for the Hydro-X system.
Note: This is a replacement or spare part. The main controller comes with a sensor already.
"Sensors should remain dry and clean to prevent premature failure. Do not spray foreign substances or allow water / condensate on the sensors"