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1.It supports Global 4G Bands
2.Supports 2G/3G/4G network
3.SMS command or confirmation by SMS
4. Modbus RTU to Modbus TCP
RS485 to 2G/3G/4G LTE Celluar Modem Introduction
USR-DR504-G is an industrial 2G/3G/4G LTE celluar Modem with high stability and anti-interference. It can realize the data transparent transmission between serial port RS485 and 4G celluar network.
The two-way data transmission from serial port to network server can be easily realized by setting simple AT commands.
1. Supports access to Global bands.
2. Supports 2 way connections,support TCP Server,TCP Client and UDP Client.l
3. Hardware watchdog.
4. Each connection supports buffering 5 packets of serial port data, each packet is up to 1000byte .
5. Support identity package and heartbeat package.
6. Support setting parameters by serial / SMS / network.
7. Support base station positioning function.
8. Support Modbus RTU to TCP
9. Support base station positioning.
10. Support multiple work mode: transparent transmission mode, HTTPD Client mode and SMS mode.l
11. Support remote upgrade, keep the firmware up to date.
12. Support sending English SMS
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