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HLK-RM04 UART to Serial Wifi Ethernet Wifi Module


  1. Serial to WIFI, Ethernet, Ethernet to Wifi multifunction Wifi module, transparent dual-way data transmission
  2. Integrated 10/100M ethernet port, Max. baud ratio up to 230.4kbps
  3. Adopts Ralink program, high-quality material
  4. Reliable system core suit safety and long-run system application
  5. Working temperature: industrial class -25~75°C

399.00 600.00

This is HLK-RM04 UART to Serial Wifi Ethernet Wifi Module.

HLK-RM04 A new low cost embedded UART-ETH-WIFI module (serial port-Ethernet-Wireless network).

This product is an embedded module based on the universal serial interface network standard, the built-in TCP / IP protocol stack allows the user, serial port, Ethernet, wireless network (wifi) conversions between the interface.

HLK-RM04 through the module, traditional serial devices do not need to change any configuration; The data can be transmitted through the Internet network. Users provide a quick solution for serial devices to transfer data over Ethernet.


Features :

  1. Serial to WIFI, Ethernet, Ethernet to Wifi multifunction Wifi module, transparent dual-way data transmission
  2. Integrated 10/100M ethernet port, Max. baud ratio up to 230.4kbps
  3. Adopts Ralink program, high-quality material
  4. Reliable system core suit safety and long-run system application
  5. Working temperature: industrial class -25~75°C
  6. Built-in 360M MIPS CUP, 16M RAM, 4M FLASH, wireless baseband, RF front-end, and multi-peripheral bus
  7. Support IEEE 802.11 b/g/n, transparent protocol data transmission mode
  8. Support WIFI encryption and algorithm, WEP / WAP-PSK / WAP2-PSK / WAPI,encryption type WEP64 / WEP128 / TKIP / AES
  9. Offer AT+ instruction set, offer friendly web configuration page
  10. Built-in antenna or external antenna
  11. Support AP and Station mode, AP support iPhone and android connect with WIFI, support AT, Station online simultaneously
  12. TCP server/TCP Client/UDP work mode, support network protocol: TCP / UDP / ARP / ICMP / HTTP / DNS / DHCP
  13. Support DHCP auto gain IP, support IP distribution at AP Mode
  14. Serial speed ratio adjustable up to 320400

Package Includes :

1 x HLK-RM04 UART to Serial Wifi Ethernet Wifi Module

Weight 100 g
Supply Voltage (V) 5
Communication Speed 230400 baud maximum
Connection Speed (Kbps) Up to 230.4
DHCP Yes
Dimensions in mm (LxWxH) 70x50x18
Shipment Weight 0.04 kg
Shipment Dimensions 10 x 6 x 3 cm

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