DTU(11) RTU(11) 物联网(11) MBUS(10) HERY(6) 4G全网通(5) 智慧工地(3) PLC(2) RS485(2) RS232(1) DI(1) DO(1) AI(1) AO(1) 集中器(1) 采集器(1) 抄表(1) GPRS(1) GPRS2G(1) 智慧水务(1) 5G(1) MQTT(1) HTTP(1) IOT(1) SCADA(1) NBIOT(1) WiFi(0) BLE(0) PWM(0) 污水处理(0)