Using the Sonoff SV with a relay to open/close gate remotely by semiautomatix Aug 03, 2018 4 Sonoff

12V + and – (from the gate motor supply) to the sonoff + and – power input
sonoff SV output (+ and -) to relay input
relay output (NO contact) to gate motor trigger contacts

The relay can easily be purchased at Communica, Mantech or similar for about R10 a piece This will require some basic soldering skills and a bit of time (approximately 10 minutes I would say).

Please note: the end user accepts full responsibility for death, injury or damage to property when following the above instructions.

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  • Michael 10th Jan 2019 at 11:19 am

    Is it not possible to use a sonoff with inching to operate the gate (with no relay required), wired to come and no?

    Thanks Michael

    • semiautomatix 15th Jan 2019 at 12:39 pm

      Hi Michael

      The Sonoff SV lastest firmware includes a pulse setting allowing you to use inching without additional equipment. Alternatively use the Sonoff 1 Channel.

      Kind Regards


  • Peter 5th Oct 2019 at 3:39 pm

    Hey guys sorry what does itching mean in this context?
    Operating the gate remotely with an SV got me all excited 🙂

    • semiautomatix 15th Oct 2019 at 11:58 am

      Hi Peter

      Inching is when the switch remains on for a fixed period and then turns off. Usually used to simulate a button press.



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