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Uart Wifi Module With Ceramic Antenna Hlk-Rm04
Original price was: 300.00 EGP.200.00 EGPCurrent price is: 200.00 EGP.
The HLK-RM04 is an embedded UART-to-WiFi module that enables wireless serial communication (TCP/IP) for IoT, smart home, and industrial automation projects. It features a built-in ceramic antenna, supports 802.11 b/g/n (2.4GHz), and operates in AP, STA, or AP+STA modes, making it ideal for connecting microcontrollers (Arduino, STM32) to WiFi networks.
Developed by Hi-Link, this compact module is firmware-configurable via AT commands or web interface, offering a reliable wireless bridge for serial devices.
Description
Wifi Module With Ceramic Antenna
Description:
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Network standard
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wireless：IEEE 802.11n, IEEE 802.11g, IEEE 802.11b
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wired：IEEE 802.3, IEEE 802.3u
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Wireless transmission rate
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11n: maximum up to 150Mbps
11g: maximum up to 54Mbps 11b: maximum up to 11Mbps |
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Tracks number
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1-14
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Frequency range
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2.4-2.4835G
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Emission power
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12-15DBM
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Interface
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10/100Mbps LAN/WAN multiplex interface
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Antenna
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Antenna type
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Onboard antenna / External Antenna
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Functional Parameters
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WIFI work mode
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Client/AP/Router
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WDS Function
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Support WDS wireless bridge connection
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Wireless security
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Wireless MAC address filtering
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Wireless security function switch
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64/128/152 bit WEP encryption
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WPA-PSK/WPA2-PSK, WPA/WPA2 security mechanism
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Network management
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Remote Web management
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Configuration file import and export
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WEB software upgrade
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Serial to Network
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Maximum transmission rate
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230400bps
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TCP connection
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Max connection number>20
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UDP connection
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Max connection number>20
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Serial baud rate
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50~230400bps
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Other Parameters
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Status indicator
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Status indicator
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Environmental standard
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Operating temperature：-20-70℃
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Operating humidity：10%-90%RH
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Storage temperature：-40-80℃
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Storage humidity：5%-90%RH
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Additional properties
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Frequency bandwidth optional：20MHz, 40MHz, Auto
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Electrical Characteristics
| 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 |
Pin Connection
Wifi Module With Ceramic Antenna
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