OpenSprinkler Zone Expander provides an easy and inexpensive way to increase the number of stations for your OpenSprinkler. Each expander adds 16 zones.
NOTE: please choose the correct version. If you have OpenSprinkler 2.x, you must choose Expander 2.1; if you have OpenSprinkler Pi (OSPi), you must choose expander 2.1 AC. If you have OpenSprinkler 3.0 (built-in WiFi), you must choose Expander 3.0. Choose AC or DC depending on your main controller (AC controller has an orange terminal block; DC controller has a black-colored power barrel; you can also find out the power version when you reboot the controller, or check the ‘About’ page in the mobile app or web interface). One more time: OpenSprinkler Pi (OSPi) must use Expander 2.1 AC.
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