NF-04 BK2425 SPI 2.4G Wireless Module

NF-04 BK2425 SPI 2.4G Wireless Module


NF-04 BK2425 SPI 2.4G wireless module 250k~2Mbps
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Availability: 8 in stock SKU: STC-00010 Categories: , Tags: , , , , , ,


This module based on the BK2425 Low-power high-performance 2.4GHz GFSK transceiver. It (program) is compatible with NRF2401/NRF2401+. It is a supermini, a good choice to replace the NRF2401 or NRF2401+
NF-04 is a 2.4G wireless module with small size and on-board antenna. It has a high speed (up to 2Mbps), SPI interface, and a pure hardware module. It has high stability, high cost performance and good spectrum test characteristics. , small size, using all industrial grade components.
NF-04 can be widely used in various Internet of Things applications, and is suitable for wireless mouse and keyboard, wireless remote control, somatosensory equipment, active RFID, toys, NFC, low-power self-organizing network wireless sensor network nodes. Ideal solution for IoT applications
  •  DIP-8 ultra small package, built-in 2.4G antenna, compact size, easy to use
  • Support data reception of six channels
  • Support normal modulation methods such as GFSK/FSK
  • Support 2Mbps/1Mbps/250Kbps data rate
  • Multi-frequency point: 126 frequency points to meet the needs of multi-point communication and frequency hopping communication
  • Internally integrated high PSRR LDO
  • Wide power supply voltage range: 1.9~3.6V
  • Average emission current as low as 110mA
  • Receive sensitivity: -96dBm@250kbps
  • Maximum transmit power: +7dBm
  • With four-wire SPI interface, the speed can up to 10MHz
  • Internal integrated intelligent ARQ baseband protocol engine
  • Transceiver data hardware interrupt output
  • Support 1bit RSSI output
  • Low application cost: BK2425 integrates all high-speed signal processing parts related to RF protocol, such as: automatic retransmission of lost data packets and automatic generation of response signals, etc.
The BK2425 SPI interface can be connected with the hardware SPI port of the microcontroller or with a single-chip microcomputer. The I/O port is simulated, and the internal FIFO can interface with various high and low speed microprocessors, which is convenient for using low-cost single-chip microcomputers.

16. Easy to develop: Since the link layer is fully integrated on the module, it is very easy to develop. Automatic retransmission function, automatic detection and retransmission of lost data packets, retransmission time and number of retransmissions. Software control automatically stores the packet auto-answer function without receiving the response signal. After receiving valid data, the module automatically sends a response. Signal, no need to separately program carrier detection – fixed frequency detection built-in hardware CRC error detection and point-to-multipoint communication address control packet transmission error counter and carrier detection function can be used for frequency hopping setting can simultaneously set six receiving channel addresses, which can be selective The open receiving channel stamp hole has a 2.54mm pitch for easy embedded applications.

1VCCPower supply must be between 2.0 ~ 3.6V
2GNDGround wire, connected to the power reference ground
3CSNInputModule chip select pin for starting an SPI communication
4CEInputModule control pin
5MOSIInputModule SPI Data Input Pin
6SCKInputModule SPI bus clock
7IRQOutputModule interrupt signal output, active low
8MISOOutputModule SPI Data Output Pin


Module modelNF-04
Size28.5*15.2 mm
Communication InterfaceSPI (up to 10Mbps)
Air speed250k~2Mbps 3 levels adjustable (250kbps, 1Mbps, 2Mbps)
Spectrum range2400MHz~2525MHz adjustable, 1MHz stepping
Antenna formOnboard PCB antenna, gain 2dBi
Maximum transmit power7dBm
Receiving sensitivity-96dBm@250kbps
Average currentEmission current: 25mA (7dBm)
Receive current: 15mA (2Mbps)
Shutdown current: 1.0uA (Shutdown mode)
Power supply range1.9~3.6V, typical value 3.3V
Operating temperature-20 °C ~ 85 °C
Storage environment-20 °C ~ 90 °C, < 90% RH



Download NF-04 Datasheet (in Chinese)

Download BK2425 Datasheet

Download Code Example



Additional information

Weight3 g
Dimensions15 × 29 cm



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