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AF-GSM300-4G Smart Gateway

● It supports data acquisition of the serial port MODBUS RTU protocol and communicates with the Acrel server through the Acrel platform protocol.
● It supports for data acquisition of up to 30 MODBUS RTU devices.
● It supports the acquisition of 5 register address fields for each MODBUS device, with each register address range not exceeding 64.
● It supports triggering alarms by presetting alarm addresses and alarm values for each MODBUS address range. There are currently up to 14 alarm addresses for each address field.
● It supports server MODBUS or LORA unvarnished transmission communication.
● It supports to connect the data center by fixed IP and dynamic domain name resolution.




Working frequency band

LTE-FDD B1 B3 B5 B8 LTE-TDD B34 B38 B39 B40 B41 CDMA B1 B5 B8 GSM 900/1800M LORA 137~1020MHz


Auxiliary power supply



Starting Current
350~400mA@12V(400mA when dialing)




Typical connection


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