6 LCD Display screen 7 Output ON/OFF OFF/ON Switch breaker 8 Electricity volume indicator LED Display the battery's capacity 9 ALM alarm indicator light blinking ALM Red- trouble-light on 10 Run indicator light RUN Display state information 11 ADS Dialer ADS Display connection address 12 RS485/CAN port RS485/CAN RS-485/CAN connection port-A RS485/CAN 13 RS485B port RS485B RS-485 Connection端口B RS485