The USR-G781 is an industrial-grade IoT cellular modem designed to provide reliable communication between RS232/RS485 serial devices and 4G LTE networks. It supports 2G, 3G, and 4G LTE connectivity, with a SIM card slot that accommodates standard 2FF SIM cards (3V & 1.8V). The device offers two serial interfaces: RS232 (via DB9 connector) and RS485 (via 3-pin terminal block), supporting a wide range of baud rates from 1200 bps to 460800 bps. It features one WAN port (configurable as LAN) and one LAN port, both with 10/100 Mbps speeds, supporting auto MDI/MDIX and 1.5KV network isolation protection.
Features:
- 4G LTE Connectivity: Supports 2G, 3G, and 4G LTE networks with SIM card slot.
- Serial Interfaces: RS232 (DB9) and RS485 (3-pin terminal block) for versatile device connections.
- Ethernet Ports: 1 x WAN and 1 x LAN port, both 10/100 Mbps with auto MDI/MDIX.
- Power Supply: DC 9~36V input, with DC 12V/1A power adapter included.
- LED Indicators: Power, network status, serial data transmission, and SIM card detection indicators.
- Wide Temperature Range: Operates from -35°C to +75°C.
- Compact Design: Metal housing, IP30 rated for industrial use.
- Network Protocols: Supports PPP, PPPoE, DHCP client for WAN, and ARP, DHCP server for LAN.
Package Includes:
1 x USR-G781 IOT Industrial Serial RS232 RS485 to 4G LTE Modem (Power Adapter/ Serial Cable Included)
1 x Serial Cable
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