KC868-A16S configure yaml for ESPhome

[AshS]

How are you configuring A1 - A4 in ESPHome?      you can use ADC in esphome: https://esphome.io/components/sensor/adc.html
Can A1 be used for digital input pulse sensor?      yes, but you need to compare a voltage. the distance wire can't be too long.

Thank you.

So, if I used a switch pulled to 12V and used ADC to detect going to 0V, that would be OK with the board hardware?

Or, could I use GPIO33 (GSMTX) and GPIO14 (GSMRX) from the P2 HMI header?

The problem is that ESPHome Pulse Counter does not work with inputs from an expander.