G-NiceRF RF4438PRO 433MHz 100mW 20dBm Si4438 Embedded FSK Long Range wireless transceiver module

Feedback Ratings
US $4.40 / Piece |2 Pieces (Min. Order)
- + Pieces available
0piecesselected, US $in total
View Details
Shipping fee:
Depends on the order quantity.
Lead Time:
5 day(s) after payment received
Report Suspicious Activity
Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
RF4438PRO -433MHz

RF4438PRO 433MHz 1W Si4438  SPI Interface Embedded FSK Long Range wireless transceiver module 



Include in the package:

1pcs  RF4438PRO module in 433MHz

1pcs SW433-TH32 Spring Antennas 



RF4438PRO adopts Silicon Lab EzradioPro2 RF transceiver Si4438, which is a highly integrated wireless ISM band transceiver chip. The features of high sensitivity (-124 dBm), +20 dBm output power, low current consumption, 10PPM crystal, and good RF matching circuit make this module work well in hot/cold environment with reliable communication and long distance.
  • Frequency:433MHz (customizable 425-525MHz)

  • High Sensitivity up to -124dBm

  • Max output power:20dBm

  • 14mA @ receiver mode

  • Data transfer rate:0.1-500kbps

  • (G)FSK, OOK Modulation mode

  • 1.8-3.8 V Power supply

  • Ultra-low consumption shutdown mode

  • Digital received signal strength indicator (RSSI)

  • Timed wake-up function

  • Excellent antenna match circuit and bi-direction communication

  • Configurable packet structure

  • Preamble detection

  • 64/128byte transmit and receive data register(FIFO)

  • Low-battery detection

  • Temperature sensor and 8-bit

  • analog-to-digital converters

  • Operating Temperature Range:-40 ~ + 85 °C

  • Integrated voltage regulator

  • Frequency hopping

  • Power-on reset function

  • Built-in crystal adjustment function


  • Remote control

  • Remote meter reading

  • Home security alarm and remote keyless entry

  • Industrial control

  • Home automation remote sensing

  • Individual data records

  • Toys control

  • Sensor network

  • Tire pressure monitoring

  • Health monitoring

  • Wireless PC peripherals

  • Tag reading and writing


Electrical Specification





 Product Show:



Application circuit

The typical schematic circuit is as below:




Typical application: 



Pin Definition:





Machinism Dimensions:









Company Information:

Our company is engaged in researching, developing, producing and selling IOT(internet of things) products. We devoted ourselves on providing good RF modules, walkie talkie modules and integrated digital sensor modules. Meanwhile, ODM and OEM projects are welcomed. With more than 10 years experience of product design in RF and sensors, we have earned a good reputation among our customers.