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Full Version: how to use HAv2 RS485 switch adapter work with E16S relay board
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1. download KCS v2 firmware to KC868-E16S board, enable RS485 with "MODBUS-HA" mode.
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2. use HAv2 PC config tool set the button action.
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3. connect HAv2 with wall switch panel's K1,K2,K3,K4,K5,K6,KCOM to HAv2 board (use for buttons). D1,D2,D3,D4,D5,D6,DC12V to HAv2 board (use for LED state feedback) 
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4. when press switch panel button or control by KCS monitor webpage or tuya app, the switch LED state will be updated.
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this just demo for 6 relay, if you want many more switch panel control for 16 channel relay. just add switch panel and HAv2 module, parallel connection with RS485 port on KC868-E16S.