problem with kc868 has v2

[admin]

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.