USR-GPRS232-DTU USR MANUAL
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Jinan USR IOT Technology Limited
5. Supply power
6. LED Status
NET: work instructions, NET has been flashing after the module starts, in the absence of network activity slow
flash (flash once for about 3 seconds), when there is network activity (telephone / Internet) Flash (about 0.7 seconds);
DATA: Data connection instructions, DATA lamp module connections to the server after the light, and the server is
disconnected Jimie, if the data transmission, DATA flashes about;
POW: Power indicator, when the power supply to the module, POW lights;
7. serial data receive