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DreamLNK
DL-EFG23-B
433/868/915MHz
EFR32FG23
+20dBm
1.7~3.8V
-123dBm
1200m
20.16x17.46mm
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433MHz/868MHz/915MHz Wireless FSK Transceiver Module with EFR32FG23 Chip
DL-EFG23-B is a high-performance Sub-1GHz RF module developed by DreamLNK based on the EFR32FG23 wireless SoC (with an integrated ARM Cortex-M33 processor) of Silicon Labs. This chip integrates an advanced RF transceiver, a low-power management unit, and a rich set of peripheral interfaces. It supports multiple frequency bands such as 433/868/915MHz, and features high output power (up to +20 dBm) and high receiving sensitivity (up to -123 dBm), offering excellent RF performance and strong anti-interference ability.
Thi DL-EFG23-B RF module combines an integrated RF controller (Cortex®-M33) with a powerful Arm® Cortex®-M333 processor. The main clock frequency can reach up to 78MHz, with 256K of FLASH and 32K of RAM. With its fully functional built-in AT Commands, the module support any serial baud rate from 2400 to 921600bps, which can improve communication efficiency. Through the AT commands, users can easily configure wireless network parmeters. Moreover, the software internally supports obtaining RSSI (Received Signal Strength Indication) and implementing common wireless communication topologies such as point-to-point and point-to-multipoint, greatly simplifying the application development process.
Though a multi-functional firmware is pre-installed at the factory, you can also conduct secondary development based on Silicon Labs development environment if needed.
(Note: these RF modules will be sold base on our standard firmware. For specific requirements, please feel free to contact us.)
Application Scenarios
Empowering long-distance, low-power, high-speed applications
Power & Energy: Smart Grid Monitoring
Real-time monitoring of substations, cable tunnel equipment, fault warning, intelligent inspection, power generation efficiency optimization, etc.
Industrial Manufacturing
Industrial Internet of Things (IIoT)
Equipment condition monitoring, predictive maintenance, and production process optimization through sensors and wireless connectivity.
Smart City
Smart street lamps, parking lots, manhole covers
Ultra-long coverage capability reduces gateway deployment, upgrading urban infrastructure to “automatic management.”
Advanced Metering
High-End Smart Meters
Smart water meters, electricity meters, gas meters, heat meters, industrial flow meters, etc. – stable and power-efficient.
Industrial Automation
Industrial Data Acquisition Systems
Completely avoids congestion; wide-temperature design and high reliability meet the demanding conditions of industrial sites.
Intelligent Mining
Unmanned Mining / Intelligent Mining
Remote control of mining equipment, unmanned intelligent inspection, ensuring safe production.
New Energy
Remote Operation & Maintenance of Energy Equipment
Remote data monitoring and fault diagnosis for equipment such as wind farms and oil & gas fields.
Smart Healthcare
Wireless Medical Devices
Remote patient monitoring, medical asset tracking, pharmaceutical cold chain monitoring, etc.
Features
Hardware Features:
● Support a wide power supply voltage range :1.7~3.8V;
● Sleep current: <1uA (EM4 mode), suitable for battery-powered remote sensors and network nodes.
● High - efficiency receiving performance (RX current: 8mA);
● TX transmission power: up to +20dbm;
● Excellent receiver sensitivity: -123dBm @ 2.4kbps; -110dBm @ 50kbps.
● Accurate signal strength indication and channel evaluation
● AES-128 or AES-256 hardware encryption support
Software Features:
● Use AT commands for configuration and saving, facilitating development and debugging;
● Support transparent transmission mode for data transfer;
● Support control of data flow in transparent transmission mode;
● Support any serial port baud rate from 2400 - 921600bps;
● Support RSSI acquisition at any time for channel idle detection;
● Support channel switching to avoid co-frequency interference;
● Can implement fixed - point transmission, broadcast and monitoring transmission modes
Download Center
Brief Introduction of DL-EFG23-B SoC Wireless Module 
Technical Parameter
Parameter | Min. | Typical | Max. | Unit | Remarks |
Operating Conditions | |||||
Working Voltage | 1.7 | 3.3 | 3.8 | V | To ensure maximum chip power, stable voltage should ≥ 3.0V |
Communication Level Range | -0.3 | 3.3 | 3.8 | V | Out range may damage the chip |
Working Temperature Range | -40 | 25 | 85 | ℃ | The larger the temperature difference, the greater the required bandwidth |
Current Consumption | |||||
Receiving Current | 7.5 | 8 | 8.5 | mA | @DCDC |
TX Current | 145 | mA | @433MHz ANT 50Ω, TX power @ +20dBm | ||
140 | mA | @868MHz/915MHz, @DCDC ANT 50Ω, TX power @ +19.7dBm | |||
Sleep Current | 0.2 | 5.5 | 7 | uA | |
RF Parameters | |||||
Recommended frequency range (to ensure the best performance) | 410 | 433/470 | 510 | MHz | @433MHz/470MHz RF module |
830 | 868/915 | 960 | MHz | @868MHz/915MHz RF module | |
Output Power Range | 20 | 20 | dBm | Software configurable | |
433MHz Receiving Sensitivity | -110 | dBm | @DR=50kbps, FDEV=25kHz | ||
868/915MHz Receiving Sensitivity | -123 | dBm | @DR=2.4kbps, FDEV=1.2kHz | ||
Pins Definition:
Pin No | Pin Name | Type | Description |
1 | ANT/NC | AI/AO | RF signal input/output port, π-matching circuit must be reserved; Adopt 50Ω impedance matching for RF routing, route the ground and add via holes around it |
2 | GND | PWR | Reliable grounding |
3 | 3.3V | PWR | To maximize the chip function, ≥3.0V stable voltage is recommended |
4 | PB00 | I/O | General I/O port, no function currently |
5 | PA00 | I/O | General I/O port, no function currently |
6 | PA01/CLK | I/O | General I/O port, no function currently |
7 | PA02/DAT | I/O | General I/O port, no function currently |
8 | PA03 | I | Switching between AT Command and Transparent Transmission Mode, defaulted high level 0: Transparent Transmission Mode 1: AT Command Mode |
9 | PA04 | I | Control Module Sleep, defaulted high level 0: Sleep 1: Wake up High level can be directly connected, if low-power consumption is not a must |
10 | PA05 | In | (UART-RX) TTL serial port input, connected to external TXD output pin |
11 | PA06 | Out | (UART-TX) TTL serial port output, connected to external RXD input pin |
12 | PA07 | O | (AUX) is used to indicate the working status of the module. 0: The device has completed initialization and serial communication can be carried out. 1: Initialization is not completed and serial communication cannot be carried out. In transparent transmission mode: 0: Idle 1: The module has received data and will output the data via the serial port after the set delay. When transmitting data to the module: 0: The buffer is empty (transmission is completed). 1: The buffer is not empty. |
13 | PA08 | I/O | General I/O port, no function currently |
14 | GND | PWR | Reliable grounding |
15 | VCC | PWR | To maximize the chip function, ≥3.0V stable voltage is recommended |
16 | PD03 | I/O | General I/O port, no function currently |
17 | PD02 | I/O | General I/O port, no function currently |
18 | NC0 | NA | Normally N/C |
19 | NC1 | NA | Normally N/C |
20 | NC2 | NA | Normally N/C |
21 | NC3 | NA | Normally N/C |
22 | NC4 | NA | Normally N/C |
23 | GND | PWR | Reliable grounding |
24 | PC01 | I/O | General I/O port, no function currently |
25 | PC02 | I/O | General I/O port, no function currently |
26 | PC03 | I/O | General I/O port, no function currently |
27 | PC04 | I/O | General I/O port, no function currently |
28 | PC05 | I/O | General I/O port, no function currently |
29 | PC06 | I/O | General I/O port, no function currently |
30 | PC07 | I/O | General I/O port, no function currently |
31 | RST | O | Hardware reset, active low |
32 | NC5 | NA | Normally N/C |
33 | NC6 | NA | Normally N/C |
34 | NC7 | NA | Normally N/C |
35 | GND | PWR | Reliable grounding |
36 | ANT | AI/AO | RF signal input/output port, π-matching circuit must be reserved; Adopt 50Ω impedance matching for RF routing, route the ground and add via holes around it |
Product size:
DreamLNK is a high-tech enterprise specializing in ISM band micropower wireless communication technology, providing different kinds of wireless modules and one-stop IoT solutions, including 433/868/915MHz wireless modules, 2.4G wireless Modules, FSK Transceiver Modules, LoRa Modules, Antennas, Remote Controls, and customized wireless RF solutions. Welcome to inquire!
