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Sennheiser RR Flex

Extra wireless receiver for Sennheiser Flex 5000 wireless TV system

Item # 143RRFLEX

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3 questions - 3 answers

Item # 143RRFLEX

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About the Sennheiser RR Flex

James Ralston

The more, the merrier

Add this extra wireless receiver (or two or three) to your Sennheiser Flex 5000 TV listening system so housemates or family members can get in on the late-night TV binge-fests, too. The RR Flex receiver has a 3.5mm stereo output for connecting your favorite pair of earbuds or headphones. Each has its own volume controls, a "Speech Intelligibility" button to boost dialogue, and a battery life of up to 12 hours.

Product highlights:

  • add-on headset for use only with the Sennheiser Flex 5000 wireless TV listening system
    • up to four headsets can be used with a single transmitter
  • RF wireless transmitter range: up to 100 feet
  • wireless receiver includes a headphone minijack for connecting your choice of headphones
  • large volume buttons and "Speech Intelligibility" button for boosting dialogue
  • built-in rechargeable battery provides up to 12 hours of operation
  • docks on the Flex 5000's transmitter to charge (one wireless receiver can dock at a time)
  • radio frequency: 2.4-2.48 GHz
  • weight: 1.16 ounces
  • warranty: 2 years
  • MFR # 506823

What's in the box:

  • RR Flex Wireless clip-on receiver
  • Magnetic battery charger with attached 36" cord
  • AC adapter with attached 58" DC output cord (DC output: 5V 1A)
  • 4 AC plug adapters (No Amer / Euro / UK / Australia)
  • Quick Guide
  • Compliance Information
  • Safety Guide

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More details on the Sennheiser RR Flex

Mark G.

Product Research


Overview: The Sennheiser RR Flex clip-on wireless receiver an accessory to the Flex 5000 Digital Wireless TV Headphone System. It operates in the 2.4 GHz RF band, and cannot be used without the TR 5000 Transmitter. The Flex 5000 system can enhance your TV watching experience by providing clear, intelligible audio of your favorite programs. The RR Flex receiver has a 3.5mm output that lets you connect your favorite pair of headphones (minimum 16Ω). Up to 4 receivers can be used simultaneously with a TR 5000 transmitter.

RR Flex: The RR Flex clip-on wireless receiver has a 3.5mm audio output for connecting your own favorite headphones for listening to your audio source. The connected headphones must have a minimum impedance of 16Ω. With a range of up to 100 feet, the receiver allows you to move around freely while you watch TV. It has a built-in Lithium-Polymer rechargeable battery (3.7V, 350mAh) with a typical operating time of up to 12 hours. The RR Flex features an on-board volume control and Speech Intelligibility button.


  • Connection: 3.5mm stereo jack for headphones (min. 16Ω) or induction loop for hearing aids
  • Output Voltage: 900mV at 32Ω
  • Frequency Response: 15 Hz to 16 kHz
  • Battery: Operating Time: up to 12 hours; Charging Time: up to 3 hours (Fast Charge: 30 minutes for 2 hours operating)
  • Dimensions: Width 1.153" Height 3.424" Depth 0.955"
  • Weight: 1.2 ounces

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Customer Q&A

3 questions already asked

Will it work with the prior Sennheiser Set 860?
jose c.  Apr 13, 2020
1 answer
Hi Jose, thank you for your question. Unfortunately, the Sennheiser RR Flex, is only compatible with the Flex 5000, and cannot be used without the TR 5000 transmitter, that is part of the Flex 5000 system.
jessica  Apr 28, 2020 (Staff)
Will the Sennheiser RR Flex wireless receiver work with my Sennheiser Set860?
jose c.  Apr 06, 2020
1 answer
I've looked over all the details we have on it and even on Sennheiser's site. I cannot find any mention of this wireless receiver being able to work with the SET860 system
jason  Apr 26, 2020 (Staff)
Will RR Flex Receiver work with RS 5000 Transmitter ?
andrew  Jan 10, 2020
1 answer
Yes! It should work just fine!
thomas  Jan 21, 2020 (Staff)

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