Search for: Log In Register OpenSprinkler › Forums › Hardware Questions › Add MOV and RFM12B to 1.42u? This topic is empty. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts September 22, 2013 at 6:28 pm #22648 JerryAllenMember If I were to add the MOVs on version 1.42u hardware am I correct in each MOV should attach to S01 <> Common, S02 <> Common etc.? Also, adding the RFM12B to version 1.42u hardware will provide what benefit and does anyone have an example application? Great device! Jerry 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. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In OpenSprinkler › Forums › Hardware Questions › Add MOV and RFM12B to 1.42u?