Posted 6/14/2006 20:12 (#19482 - in reply to #19467) Subject: RE: Envizio & Hardi ?
I'm not to farmilar with the Hardi sprayer but it sounds like you may need to find a "latching relay" to make that work. When hitting the relay with 12V it would hold 12V until you flip the switch off, at that time the relay would "un-latch", sending 0V to the boom sense wire.