OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Feature ideas / exploring what's possible / comparing with commercial solutions › Reply To: Feature ideas / exploring what's possible / comparing with commercial solutions
July 30, 2015 at 3:08 pm #39587
@Boris: to open the main valve alone, you can use a ‘virtual’ station — meaning a station that is not connected to any physical sprinkler valve. OpenSprinkler supports up to 48 stations, so hopefully you have at least one or two spare one you can use as a virtual station. Set the virtual station to use master, then you can just turn on or off that virtual station to operate the master valve.