HLK-RM04 WIFI To UART Module

HLK-RM04 is 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, built-in TCP / IP protocol stack, enabling the user serial port, Ethernet, wireless network (wifi) interface between the conversions. Through the HLK-RM04 module, the traditional serial devices do not need to change any configuration; data can be transmitted through the Internet network. Provide a quick solution for the users serial devices to transfer data via Ethernet. Wi-Fi is a local area wireless computer networking technology that allows electronic devices to network, mainly using the 2.4 gigahertz (12 cm) UHF and 5 GHz (6 cm) SHF ISM radio bands.

SPECIFICATIONS:

1. 2,4GHz 802.11 b/g/n compatible.
2. Network standard on wire IEEE 802.3, IEEE 802.3u.
3. Network standard on WI-FI IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
4. WIFI Client/AP/Router.
5. wps/wds.
6. Possible speed UART configurable; about this since there are documents with different indications, there is the one that says 50 to 230400 bps and another declaring 1200 to 500000 bps.
7. Wireless transmission rate 11n 150Mbps, WI-FI 11g 54Mbps, WI-FI 11b 11Mbps
8. CPU on board RT5350@360MHz
9. 2 ports UART.
10. 2 ports 10/100 RJ-45 for LAN connection.
11. 1 USB 2.0 (host/slave)
12. Supports the following algorithms and security protocols WEP64/WEB128/TKIP/AES WEP/WPA-PSK/WPA2-PSK.
13. Supports the network protocols PPPOE/TCP/UDP/DDDNS/DHCP/DNS/HTTP.
14. Configurable via AT commands over a serial connection or via WEB interface.
15. Pin with voltage output 3,3V (max 300 mA).
16. Pin with voltage output 1,8V (max 300mA).
17. Supply Voltage 5V (min 3,9V, max 5,5v).
18. Current consumption about 140mA for wifi - UART.
19. Current consumption about 120 mA for one RJ-45 - UART.
20. Default Current consumption that is when is all enabled (tho ports RJ-45, the WI-FI) approximately 160 mA.

CONFIGURATIONS MODE:

The module Wi-Fi HLK-RM04 can be configured via two modes that are:

1. Web Page
2. AT Command

AT COMMAND:

     The AT mode is the mode that allows you to make all the changes via AT commands via the UART port, to ensure that the module accepts commands, the same must enter AT command mode (otherwise the module is in transparent mode).

1. At+[command]=[value]\r : for configuration.
2. At+[command]=?\r   : to query the current configuration.
3. So wanting to change the remote address you can send the command at+remoteip=192.168.11.133\n with which you set the remote address 192.168.11.133, while, wanting to get the remote  address  you can  send the at command At+remoteip=？\n which will return 192.168.11.133(in case we had sent before the previous command) .
4. At+netmode=?\r : used to obtain the operating mode of the module which can be:

           0 Default setup

           1 Ethernet

           2 Wi-Fi clients

           3 Wi-Fi AP

RELATED DOCUMENTS:

1. HLK-RM04 WIFI To UART Module Datasheet
2. HLK-RM04 WIFI To UART Module User Manual

PACKAGE INCLUDES:

1. 1 X HLK-RM04 WIFI To UART Module