HF2421

  • Product Code: HF2421
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Product Overview

The 4G serial port servers HF2421&HF2421G provide a product for protocol conversion between RS232/RS485/RS422, Wi Fi/Ethernet, and 3G/4G, meeting the solution for industrial product serial network data transmission channels. This product integrates rich hardware interfaces such as 4G/3G, Wi Fi, Ethernet, high-speed serial ports, RS232, RS485, RS422, etc., and is based on the ECos operating system. The product includes a web page and TCP/IP protocol stack, which can easily achieve remote data collection and monitoring. The hardware interface meets the national standard requirements, and ESD supports air discharge ± 15KV and contact discharge ± 8KV. The HF2421&HF2421G serial servers adopt highly integrated hardware and software platforms, which have been optimized for industrial applications, smart grids, and personal health and medical applications. Only adding one product can meet the needs of equipment data monitoring and transmission.

Product Features

  • Based on Linux OpenWrt system, MIPS architecture, 16MB Flash, 64MB RAM
  • Supports 4G/3G/GPRS networks, FDD-LTE、TDD-LTE、WCDMA、TD-SCDMA、CDMA2000、 CDMA 1X/EVDO、GSM900/1800
  • Supports GPS/Beidou/GLONASS/Galileo/QZSS/SBAS positioning with an accuracy of 2.5 meters (only HF2421G)
  • Supports 3-channel DI, 2-channel relay DO (only HF2421G)
  • Supports dual serial ports RS232/RS485/RS422 to 4G/3G/2G conversion
  • Supports dual Ethernet to 4G/3G conversion
  • Supports 802.11bgn Wi Fi to 4G/3G conversion
  • Support APN dedicated network card
  • Support VPN virtual private networks (PPTP, L2TP, L2TP+IPSEC)
  • Support TCP/IP/Telnet/Modbus TCP protocol, TLS/AES/DES3 secure encryption for data
  • Support webpage mode, PC software IOTService local or remote configuration
  • Support IOTBridge remote management
  • Support web OTA wireless upgrade
  • Wide voltage 9-36VDC power supply
  • Size: 178mm x 95mm x 26mm
SDRAM 64MB
Rate 10/100M
Standard 802.11 b/g/n
Network Mode AP
Transmit Power 802.11b: +20dBm(Max.) 802.11g: +18dBm(Max.) 802.11n: +15dBm(Max.)
Receive Sensitivity 802.11b: -89dBm 802.11g: -81dBm 802.11n: -71dBm
Processor MIPS
Basic Frequency 580MHz
Operating System Linux OpenWrt
Resource-Flash 16MB
Interface Standard 2 RJ45
Protection 8KV Isolation
Security Protocol SSL v3 AES 128Bit DES3
Internet Type 4G/3G/GSM/GPRS
Data Rate LTE FDD：50Mbps(UL)， 150Mbps(DL) TDD：35Mbps(UL)， 130Mbps(DL) WCDMA 5.76Mbps(UL)， 42Mbps(DL) TD-SCDMA 2.2Mbps(UL)， 4.2Mbps(DL) CMDA 1.8Mbps(UL)，3.1Mbps(DL) GSM/GPRS/EDGE 9.6Mbps(UL)，14.4Mbps(DL)
Frequency 2.412GHz-2.484GHz
Multi-Slot Class GPRS Class 12
Terminal Device Class Class B
Coding Schemes CS1 ~ CS4，MCS1-9
Max Transmit Power Class 4(33dBm±2dB) for GSM900 Class 1(30dBm±2dB) for DCS1800 Class E2(27dBm±3dB) for GSM900 8-PSK Class E2(26dBm±3dB) for DCS1800 8-PSK Class 3(24dBm+3/-1dB) for CDMA BC0 Class 3(24dBm+1/-3dB) for WCDMA Class 2(24dBm+1/-3dB) for TD-SCDMA Class 3(23dBm±2dB) for LTE FDD Class 3(23dBm±2dB) for LTE FDD
Application Cli Command
Network Protocol TCP/UDP
Max Link 5
SIM Card 1.8V/3V
Antenna Interface SMA(female, 50Ω)
Port Interface 2 RS232/RS422/RS485 RS232: DB9 RS485/RS422: 5.08mm connector
Data Bits 7,8
Stop Bit 1,2
Charity Bit None,Even,Odd
Baud Rate 300 bps~230400 bps
Flow Control RTS/CTS、DSR/DTR
Buffer 1K
Size 178mm x 95mm x 26mm
Work Temp. -25 ~ 85°C
Storage Temp. -45 ~ 105°C
Input Voltage 9~36VDC
Work Current ~300mA
Power <2.7w
Accessories 5V/1A Adapter, Male to Female Serial Cable GPRS Antenna
User Guide
HF2421&HF2421G User ManualV1.2(20200313) [ Download Times: 2857,  Date Update: 2020-03-13 20:33:55 ]
Application Notes
HF2421_Test_Guide_20170830 [ Download Times: 1182,  Date Update: 2018-04-16 15:08:47 ]
HF2421 base station positioning use case [ Download Times: 1014,  Date Update: 2018-04-20 15:32:48 ]
HF2421 Quick User Manual.rar [ Download Times: 1164,  Date Update: 2018-08-17 09:22:26 ]