Used one - to - one collateral communication technology , real - time instuction communication is strong 、 signal respond soon . and the button lamp adopt matrix output communication technology . decrease the cable 采用一對一并行通訊技術(shù),指令通訊實時性強、信號響應(yīng)速度快。按鈕燈采用矩陣輸出,減省了井道布線。