LoRa/FSK Transceiver Module - 915MHz (RFM97CW)

$ 9.95 $ 5.99

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RFM97CW Sub-GHz radio transceivers are ideal for long range wireless applications. With high integration, the RFM97CW simplifies the peripheral materials needed in system design. The SX1276 based module has sensitivity up to - 138dbm that optimizes link performance for applications. In addition, the RFM97CW also supports the function of duty cycle operation mode, channel listening, high-precision RSSI, power on reset, squelch output, etc., which makes the application design more flexible and realizes product differentiation design. The working voltage of RFM97CW is from 1.8V to 3.7V. When the sensitivity of - 138dbm is reached, only 9.9ma current is consumed, and the ultra-low power consumption receiving mode can further reduce the receiving power consumption of the chip.

  • Internal IC: SX1276
  • Working Frequency: 915MHz
  • Modulation and Demodulation Mode: LoRa
  • Data Rate: 0.018~37.5 kbps
  • Sensitivity: -138dBm, BW=125KHz, SF=12
  • Voltage Range: 1.8 ~3.7 V
  • Receiving Current: 12.5 mA @ BW=125KHz
  • Support ultra-low power consumption receiving mode
  • Sleeping Current:
    • 160 nA, DutyCycle = OFF
    • 600 nA, DutyCycle = ON
    • 4-wire SPI Interface
  • Support fully automatic independent working mode

LoRa/FSK Transceiver Module - 915MHz (RFM97CW) Product Help and Resources

Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

3 Soldering

Skill Level: Competent - You will encounter surface mount components and basic SMD soldering techniques are required.
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Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

3 Programming

Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

3 Electrical Prototyping

Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Member #1549502 / about 3 years ago / 2

    When should I choose this over the RFM95CW or RFM69HCW?

    • Member #415430 / about 2 years ago / 1

      RFM69 is not a LORA module, so shorter ranges. I would also like to know the difference between the 95 and 97 modules which are not apparent in the available documentation... hey Sparkfun, a little wisdom please?

      • insurgent / about a year ago / 1

        The '97 is 915MHz only. The '95 is 137~1020MHz. The '97 looks to have better sensitivity, likely due to it being a single frequency.

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