Industrial-Grade Cellular Modem Router with Serial Port, RS232/RS485 to 4G LTE & WiFi, Global Band Support

Price range: $1.99 through $79.00

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Interface Diagram

Product model	VT-DTU300	VT-DTU500C	VT-DTU500E		VT-DTU500SA	VT-DTU500G
Product Type	High-performance 4g DTU, Cellular Modem Router
Main Function	WiFi/Eth/CAT1 4G Single serial port server/includes router function
Interface	RS485: 3.5 mm terminal block	RS232/RS485		LAN: RJ45, 485: connection terminal, 232: DB9
Power supply	9 ~ 24V DC screw terminal	9 ~ 24V DC Round hole mode (Can be customized)		9 ~ 48V DC Round hole mode (Can be customized terminal power supply)
Communication
Ethernet	DC9V~24V			DC9V~48V
Frequency Band	LTE-FDD: B1, B3, B5, B8	LTE-FDD: B1, B3, B5, B8		LTE-FDD: B1, B3, B5, B7, B8, B20	LTE-FDD: B1, B2, B3, B4, B5, B7, B8, B28,B66	LTE-FDD: B1, B2, B3, B4, B5, B7, B8, B20,B28,B66,B71LTE-TDD: B34,B38,B39,B40,B41
	GSM:B3/B8	GSM:B3/B8		GSM/GPRS/EDGE: 900/1800 MHz	GSM/GPRS/EDGE: 850/900/1800/1900 MHz	GSM/GPRS/EDGE: 850/900/1800/1900 MHz
Serial specification
Baud rate	300~921600bps
Parity bit	None, odd, even, mark, space
Data bit	5 ~ 8 bits
Software
Protocol	ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
Configuration	VirCom, WEB browser, device management library
Transfer protocol	Modbus TCP, MQTT, JSON, HTTP
Modbus gateway	Support multi-host mode, storage mode, Pre-configuration table (ZLMB) mode
Operating mode	TCP/IP Direct communication, virtual serial port mode
Environment
Operating temperature	-40~85℃
Storage temperature	-45~120℃
Humidity range	5~95% relative humidity