Wireless module/Serail to RJ45/Serail To Wifi HLK-RMO4
HLK-RM04 is a new low-cost embedded UART-ETH-WIFI module (serial port - Ethernet - Wireless network) developed by Shenzhen Hi-Link Electronic co., Ltd.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 user’s serial devices to transfer data via Ethernet.
Down Datasheet here
Picture1.F-structure
1.Summarize
Technical Specifications
Network standard | wireless:IEEE 802.11n、IEEE 802.11g、IEEE 802.11b |
wired:IEEE 802.3、IEEE 802.3u | |
Wireless transmission rate | 11n: maximum up to 150Mbps 11g: maximum up to 54Mbps 11b: maximum up to 11Mbps |
Tracks number | 1-14 |
Frequency range | 2.4-2.4835G |
Emission power | 12-15DBM |
Interface | 1个10/100Mbps LAN/WAN multiplex interface、interface |
Antenna | |
Antenna type | Onboard antenna / External Antenna |
Functional Parameters | |
WIFI work mode | Client/AP/Router |
WDS Function | Support WDS wireless bridge connection |
Wireless security | Wireless MAC address filtering |
Wireless security function switch | |
64/128/152 bit WEP encryption | |
WPA-PSK/WPA2-PSK、WPA/WPA2 security mechanism | |
Network management | Remote Web management |
Configuration file import and export | |
WEB software upgrade | |
Serial to Network | |
Maximum transmission rate | 230400bps |
TCP connection | Max connection number>20 |
UDP connection | Max connection number>20 |
Serial baud rate | 50~230400bps |
Other Parameters | |
Status indicator | Status indicator |
Environmental standard | Operating temperature:-20-70℃ |
Operating humidity:10%-90%RH | |
Storage temperature:-40-80℃ | |
Storage humidity:5%-90%RH | |
Additional properties | Frequency bandwidth optional:20MHz、40MHz ,Auto |
2.Hardware Explanation
Mechanical Dimensions
HLK-RM04 Mechanical Dimensions is shown in the following picture:
3.Pin Interface
The Pin of this product as shown above is defined as follows
4.Electrical Characteristics
Exceeding these conditions will result in damage to the device
Parameter | Min | Max |
Module supply voltage VCC | 3.9V | 5.5V |
Module Voltage Output VO3.3 | 3.1V | 3.5 |
Module Voltage Output VO1.8 | 1.65V | 1.9 |
GPIO Voltage | 3.1V | 3.5V |
Storage temperature | -40ºC | 95ºC |
5.Typical Application Circuit
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