SKU: 74199922305

Parallax RN-42 Bluetooth Module

Sale price$53.99 Regular price$59.99
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

Parallax RN-42 Bluetooth ModuleThe RN 42 Bluetooth Module provides a reliable method for creating a wireless serial communication interface between two devices such as a microcontroller, PC, cell phone, or another module. This module can pair up with devices supporting Bluetooth SPP (Serial Port Profile) to establish a serial interface. The RN 42 Bluetooth Module is breadboard friendly and is compatible with all 5 V and 3. 3 V microcontroller platforms. Features: Fully qualified

The RN-42 Bluetooth Module provides a reliable method for creating a wireless serial communication interface between two devices such as a microcontroller, PC, cell phone, or another module. This module can pair up with devices supporting Bluetooth SPP (Serial Port Profile) to establish a serial interface. The RN-42 Bluetooth Module is breadboard-friendly and is compatible with all 5 V and 3.3 V microcontroller platforms.

Features:
  • Fully qualified Bluetooth 2.1/2.0/1.2/1.1 module provides compatibility with many devices
  • Low power consumption for long-lasting battery-powered projects
  • Auto-connect/discovery/pairing modes make connecting to other modules easy
  • LED indicators provide visual status of connection/mode
  • Voltage jumper selects for use with 5 V and 3.3 V microcontrollers
Application Ideas:
  • Remote control a robot via PC, cell phone, or another microcontroller
  • Measurement and monitoring systems
  • Industrial sensors and controls
  • Cable replacement (wireless serial interface)
Notes:
  • This device supports Bluetooth Serial Port Profile (SPP). When connecting to another device please be sure your device supports SPP as well.
  • *Operating throughput and range may vary depending on environmental circumstances and RF interference.
  • Please note that this product is not backwards compatible with the retired Easy Bluetooth module.
Details:
  • 2 x 7 dual row male header with 0.1″ spacing
  • Jumper selectable default baud rates: 9.6 or 115.2 Kbps
  • Command-configurable baud rate from 1.2 to 921 Kbps
  • Range: ~ 35 – 50 feet line of sight indoors*
  • Voltage requirements: 5.0 VDC or 3.3 VDC
  • Current requirements: ~5 mA sleep; ~15 mA idle; ~20 mA transmit; ~50 mA max
  • Communication: 5 V/3.3 V asynchronous serial interface with RTS/CTS flow control from 1.2 – 921 Kbps
  • Dimensions: 2.33” x 1.16” x 0.45” in (59.18 x 29.46 x 11.43 mm)
  • Operating temp range: -40 to +185 °F (-40 to +85 °C)
  • PCB assembled, tested, and completed in Rocklin, California
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74199922305

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Robert
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★★★★★ 5
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Excellent quality and reliable tire repair kit, works very well.
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Reviewed in the United States on May 26, 2026
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Karyna
Lexington, US
★★★★★ 5
Amazing product.
This product is great to have around in your car. This makes it easier for solving the problem of a flat tire. I mean! In my case! I rather use this method first instead of having to remove the tire and having to go through the spare tire dilema. For a temporary solution,this kit is perfect. And in some cases! It can serve as a permanent solution. This kit is great to have in your trunk. 👍🏻👍🏻👍🏻
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Reviewed in the United States on October 9, 2025
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Mr. Jumps
Pawtucket, US
★★★★★ 5
Gets the job done.
Got 2 flats at the same time in freezing cold weather. Jack failed, but this product didn't.
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Reviewed in the United States on April 11, 2026
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James A Karon
Fort Morgan, US
★★★★★ 4
Seems fine
The kit looks good to me. Better than my old one that lasted 15 years.
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Reviewed in the United States on May 18, 2026
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JCK
Lexington, US
★★★★★ 5
Would buy again
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Reviewed in the United States on October 6, 2025

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