GREENTEL R200 - M2M Industrial Cellular Programmable Router for GPRS, 200 MIPS ARM9, RS-232/485 - GPRS converter, GSM modem, RJ45, telnet, WWW Panel, Linux system, Modbus RTU/TCP via RS485
Recommended GSM modem setup - Auron Software
Generic D921 CAT4 Network 3g Wireless Modem 4g Wifi Router With Sim Card Slot Lte Mobile Hotspot Unlocked Internet RJ45 Port 32 User Europe Version | Jumia Nigeria