USRobotics USR325686E 56K Serial Port Fax Modem
- USR-G781 is Industrial Serial RS232 RS485 to 4G LTE Modem with Ethernet /LAN Port and Sim Card Slot.
- ARM High Performance Processor, Support 4 Socket Independent Connection.
- Heartbeat Packet: can be sent to Serial or Network Periodic. To Ensure Connection is Reliable, put an end to Dead Link.
- Identity /Registration Packet: Identified Header can be Added to Packets to Check Connection Status.
- Serial port protection: Reverse Connection Projection, ESD Anti-Surge, Anti-static, Surge Protection.