problem with kc868 has v2

[Gianfranco Pepi]

if you want use HAv2 output for relay, your relay need driver, HAv2 output only mA level, can't drive relay directly.
when short HAv2 INPUT with GND, it will feedback RS485 command. But INPUT not TOGGLE with OUTPUT directly.
INPUT feedback message to RS485, OUTPUT control by RS485 command.
if you want INPUT toggle OUTPUT directly, you can use any kincony controller. just set digital input toggle relay output by IFTTT.

This relay has an input that consumes very little power, so I also use them with open collector outputs on alarm control panels. What type of controller do I need? Do you have a link to the model I should get? I have two KC868 A16s and one KC868 AP. In any case, if I use a multimeter and place the negative lead on the output and the other lead on the positive of the 12-volt power supply, the potential difference should vary. I don't see this change!