Tag: Pin mapping

Below are the pin maps for the OPT-04 option card for the SMC Gateway. OPT-04 PinsPins 3 & 14 are the UART 3.3v serial RX and TX. You may need level shifting for RS-232. Digital inputs 5 – 9 require a pull up 4.7K resistor connected to +12vdc. OPT-04 GPIO
January 16, 2017admin