TrolMaster 3-in-1 Sensor for Hydro-X only（MBS-TH） Hydro Dynamics then this is the product

then this is the product you should choose

Anden advanced features:

Rhizo Blast can be used with all grow mediums and is beneficial in hydroponic

This high-performance blend delivers oxygen to plant roots while retaining moisture and nutrients – giving you more control over your fertigation regimen

Max Height: 40 ft

TrolMaster 3-in-1 Sensor for Hydro-X only（MBS-TH） Hydro Dynamics then this is the product3 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"