Modem GSM/GPRS, Robustel GoRugged M1000 MP, interfață RS232, comenzi AT
Industrial Cellular Modem Serial Port Wireless RS232 RS485 GSM GPRS to GSM GPRS USR-GPRS232-730 Data Transparent Transmission - AliExpress
Serial Port RS232 Interface AT COMMAND Support Gsm Gprs Modem - AliExpress
Amazon.com: PUSR (Price for 2 Pcs) GSM Modem Serial RS232 RS485 to GPRS DTU with at Command USR-GPRS232-730
GSM Modem RS232/485 | Serial GSM Modems
RS232 modem - All industrial manufacturers
Amazon.com: USR-G771-E RS232/RS485 to LTE CAT 1 Cellular Modem Support LTE and GSM TCP UDP Transparent Transmission with SIM Card Support HTTP, MQTT, SMS (Modbus RTU to TCP Version NO Adapter)