Txhua lub node muaj AC-coupling capacitor, RS-485 transceiver, SymPol™ transceiver, thiab JK flip-flop. Lub AC-coupling capacitor thaiv cov kab hluav taws xob uas tau teeb tsa ntawm lub node los ntawm DC voltages uas yuav muaj nyob rau ntawm lub tsheb npav. Lub RS -485 transceiver tsuas yog ua haujlwm raws li lub tshuab xa tawm.
