Bluetooth Modem - BlueSMiRF Silver

The Bluetooth Modem - BlueSMiRF Silver is the latest Bluetooth wireless serial cable replacement from SparkFun Electronics! This version of the popular BlueSMiRF uses the RN-42 module which has a bit less range than the RN-41 module used in the BlueSMiRF Gold. These modems work as a serial (RX/TX) pipe. Any serial stream from 1200 to 115200bps can be passed seamlessly from your computer to your target.

The RN-42 is perfect for short range, battery powered applications. The RN-42 uses only 26uA in sleep mode while still being discoverable and connectable. If you need longer range, check out the Bluetooth BlueSMiRF Gold.

The remote unit can be powered from 3.3V up to 6V for easy battery attachment. All signal pins on the remote unit are 3V-6V tolerant. No level shifting is required. Do not attach this device directly to a serial port. You will need an RS232 to TTL converter circuit if you need to attach this to a computer.

Unit comes without a connector.

Bluetooth Modem - BlueSMiRF Silver Features:

  • FCC Approved Class 2 Bluetooth® Radio Modem!
  • Extremely small radio - 0.15 x 0.6 x 1.9"
  • Very robust link both in integrity and transmission distance (18m)
  • Hardy frequency hopping scheme - operates in harsh RF environments like WiFi, 802.11g, and Zigbee
  • Encrypted connection
  • Frequency: 2.4~2.524 GHz
  • Operating Voltage: 3.3V-6V
  • Serial communications: 2400-115200bps (default 115200)
  • Operating Temperature: -40 ~ +70C
  • Built-in antenna


Board: 45 x 16.6 x 3.9mm

Documents relating to the BlueSmirf Silver

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Bluetooth Modem - BlueSMiRF Silver

  • Manufacturer: SparkFun
  • Product Code: WRL-12577
  • Stock Quantity:  1
      - Backorder not allowed
  • £26.28

  • Ex Tax: £21.90


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Tags: Bluetooth, Silver, WRL-10269, WRL-12577, rn-42, rn42, roving networks, bluesmirf, modem, wireless, transmitter, receiver, module, serial, port, communication, uk supplier, sparkfun bluetooth module, sparkfun bluesmirf silver, SparkFun