Modules consist of two stations each, allowing you to build a controller more closely matching the total number of stations desired. The GreenKeeper 212 controller is supplied with a 4 Station factory-installed base configuration. Simple to install...slide the module into the appropriate sequential position in the controller. Once all modules are in place, reactivate power to the controller. The power off/power on will permit the microprocessor to recognize the newly-installed modules. Additional modules are purchased separately.
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