RJ12 Extension Cable Set (ECS-1) a unique Group Control feature

a unique Group Control feature can also be achieved while connected to the HCS-2 controller

The other variant is a dual channel where far red is flexibly controlled

TrolMaster's new PCT-3 EC & temperature probe has been improved in several ways

* Comes with a 240V standard power cord

RJ12 Extension Cable Set (ECS-1) a unique Group Control featureTrolMaster modules and sensors all come complete with a RJ12 16ft cable, Y splitter and RJ12 4 ft cable to connect to the Hydro x. When connecting modules that are farther apart, you can use the Extension cable set ECS 1. The ECS 1 comes complete with another 16ft cable, Y splitter and 4 ft cable.