OpenSprinkler › Forums › Hardware Questions › Add MOV and RFM12B to 1.42u? › Re: Re: Add MOV and RFM12B to 1.42u? September 25, 2013 at 12:57 am #25577 RayKeymaster Hi Jerry, I suggest connecting each MOV between S0x and Gnd. This way, when lightning creates a high voltage across the solenoid wire and the circuit ground, the MOV will conduct to protect the circuitry.
