Grozone OSW: On/Off 120Vac Switcher (Day/Night Sensor)

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: to be used with CO2 controller to stop exhaust fan while injecting CO2. ETL Listed. 3 year warranty. Includes: one plug-in type module and screw kit.