Grozone OSWDN On/off switcher Stim-Root #2 While not considered essential

While not considered essential

The ECMs (External Contactor Modules) are used to switch on or off auxiliary equipment during the lights-on or lights-off period

500 gallons of filtered water

But the philosophy

Grozone OSWDN On/off switcher Stim-Root #2 While not considered essentialOSWDN ON OFF 120V SWITCHER (activated by day night sensor) 109,95$ Can turn on or shut off any piece of equipment by mean of a low current 120Vac sense cord. ON OFF switching functions (upper lower receptacles) in one single module for increased flexibility. Example use #1: to be used with CO2 controller to stop exhaust fan while injecting CO2 Example use #2: to be used with any fan control to stop fogger or humidifier when fans are activated. Example