Price: £1914.00 (£1595.00 net)
Noise Cancelling Intercom System for improving the speech quality in noisy medical treatment environments
The bhi noise eliminating intercom system uses unique fully adaptive Digital Signal Processing (DSP) technology enables clear voice communications from noisy environments.  Unwanted background noise and interference is removed to leave clear speech.

Get rid of noise and hear the patient!

Noise Cancelling Intercom System for improving the speech quality in noisy medical treatment environments

The bhi noise eliminating intercom system uses unique fully adaptive Digital Signal Processing (DSP) technology to enable clear voice communications from within noisy environments.  Unwanted background noise and interference is removed or reduced to leave clear intelligible speech. 

The NEIS-RM intercom system is suitable for use in a wide range of noisy environments where the sounds of fans, motors, engines, air-conditioning, traffic etc give rise to poor voice communications at the far end where someone in an office or gatehouse is trying to understand the caller.

The system was designed to improve the voice quality in medical treatment rooms where radiotherapy and CT scanners are installed.  Voice communications between the treatment room and control room will be greatly improved.  This is very important if a patient under treatment becomes stressed and tries to communicate with the control room.  If a normal intercom is used there is a good chance that the patient may not be heard or understood.

The bhi NEIS system consists of a robust, stylish desktop control unit with a “push-to-talk" (ptt) button, connected to a remote “hands free” speaker unit with a connections for a 25ft microphone assembly that can be located to suit the patients position. Operation of the bhi intercom system is simple with connections between the control room and treatment room being made via a single straight cat 5 data cable connection with power being supplied by a medical power supply fitted in the control room side.

Suitable applications include hospital radiotherapy and CT scanner treatment rooms, Mining comms, Help Points, Transport, Refineries, Factories and buildings, drive thru’s, weigh bridges, car park entry systems, toll booths, door entry etc.

NEIS-RM25 Noise Cancelling Intercom Flyer Download


  • Up to 98% noise reduction
  • Superb audio quality and speech clarity
  • Easy to install modular system using CAT 5 data cable
  • Stylish desktop speaker console with ptt
  • Robust speaker unit with remote microphone connection
  • 25ft remote microphone assembly
  • Microphone extension cables and a microphone stand available as extras
  • Medical power supply 12 VDC (300mA)
  • Speaker unit dims (WxDxH) 180 x 160 x 240mm
  • Control unit dims (WxDxH) 150 x 220 x 70mm
  • System weight 4.5Kg

The NEIS-RM25 noise eliminating intercom system comprises the following items:

  • NEIS-DU - Desk control unit with "push-to-talk" switch
  • NEIS-SPKR - Speaker unit 
  • NEIS-MIC - 25ft microphone assembly
  • NEIS-PSU- Medical Power supply
  • User manual and installation guide

Hospital/medical applications:

The NEIS-RM25 intercom system is suitable for installation with TomoTherapy/Accuray scanners and most other makes of radiotherapy machines and CT scanners.

A full installation and service back up option is available for customers who already have a TomoTherapy Hi-ART® System installed or who are going to have a system installed in the future, Please contact Accuray direct for more information of this service .

Upgrades for existing TomoTherapy Hi-ART® systems are simple and easy to install with a minimum amount of disruption and down time, and can easily be carried out by in-house personnel. The NEIS-RM25 system also works well with equipment from other manufacturer's.

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Testimonial “The intercom system provided by BHI for our Radiation Therapy system enables us to have clear and effective two way communication during patient treatment sessions. The system is discreet, robust and able to cope with the background noise from the machines we use. The service we have received since implementing the first system has continued to be excellent.” Bupa Cromwell Hospital London

Key benefits of noise cancelling intercom systems

Clear communication is critical in healthcare environments, yet background noise can often interfere with this. 

bhi Noise cancelling intercom systems actively reduce distracting ambient noise using digital signal processing. By analysing incoming audio and identifying the speech we can filter out the unwanted noise, making the speech more intelligible and easier to understand.

There are a number of benefits to improving speech in noisy medical environments. These include:

Reduced stress on the patient

In daunting settings such as when radiotherapy machines and CT scanners are in use, clear two-way conversation is extremely important. These enclosed spaces can leave patients feeling stressed and anxious. Having a clear voice on the other end to talk to them, explain instructions and reassure them helps to calm their nerves.

Instructions are able to be clearly communicated

With enhanced intelligibility, staff no longer have to strain to make out what is being said. Conversations flow more smoothly, without the need for repetition or raised voices. Instructions during procedures can be followed first time without the risk of miscommunication or errors.

Efficiencies are improved

Noise cancelling intercoms enable clear two-way communication. This helps to improve efficiency when treating patients, allowing for a smoother, less stressful appointment.

Reduced listener fatigue

The constant need to focus and decipher speech in noisy environments leads to significant listener fatigue for hospital staff over the course of a long shift. This mental strain can impede concentration, increase irritability, and ultimately jeopardise patient safety. bhi Noise cancelling intercoms identify speech and actively filter out the annoying ambient sounds that create this tiring 'cocktail party effect'. By delivering clearer, quieter audio, they allow staff to communicate with less effort. Rather than excessive concentration, conversations flow naturally and instructions are immediately understood. The result is greatly reduced fatigue and a calmer, more focused working environment. Staff stay energised and engaged, even during the most demanding shifts in busy, noisy wards.

Ideal environments

Medical imaging departments such as radiotherapy and CT scanning rely on clear communication between healthcare professionals, especially during procedures. However, the noise from these machines can make this difficult.

Radiotherapy machines produce noise levels exceeding 60dB and CT scanners can generate up to 80dB of noise during operation, caused by the rotating gantry and fan cooling systems they incorporate.

Installing noise cancelling intercoms in radiotherapy and CT scan rooms allows staff to converse clearly despite the unwanted background noise and interference. Leading noise cancelling products like the bhi noise eliminating intercom system (NEIS-RM25) are compatible with major radiotherapy equipment brands and CT scanners.

bhi products


The bhi NEIS-RM25 leverages cutting-edge Digital Signal Processing (DSP) to facilitate intelligible speech in these noisy environments. Proprietary algorithms analyse incoming *audio to identify speech signals and filter out interfering background noise in real-time. This reduces distracting machine and ambient sounds by up to 98%, leaving only the clear voice signal.

With robust desktop stations and sleek speaker units, bhi intercoms integrate seamlessly into any medical workspace. The modular design allows flexible positioning of microphones near patients. Simple CAT5 cabling enables rapid installation in imaging suites or radiation bunkers without too much disruption.

The NEIS-RM25 epitomises reliable, intelligent technology designed around healthcare's most vital need – being heard and understood.

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NEDSP1901 Low level Audio Modules

The NEDSP1901 noise suppression modules from bhi are an ideal solution for improving speech clarity in medical intercom equipment and other communication products used in noisy clinical environments.

The NEDSP1901 provides exceptional noise reduction of up to 40dB across the key 300Hz to 5KHz speech bandwidth. This allows voices to cut through loud machinery rumble, patient monitoring beeps, and other interfering hospital sounds.

With its low power draw and compact profile, the NEDSP1901 seamlessly integrates into space-constrained medical equipment in either the receive audio path or microphone path. Flexible control options allow developers to optimise noise cancellation while minimising power usage.

By actively eliminating unwanted noise and interference at the signal level, the NEDSP1901 delivers the crisp, intelligible two-way communication essential for patient care and safety. 

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Current hospitals using the bhi products


Our bhi noise cancelling intercoms are currently used in hospitals across the world and we have sold over 1000 systems since 2010. Hospitals with our products include:

  • The Cromwell Hospital London
  • Lancashire Teaching Hospital
  • Royal Sussex County Hospital
  • Nottingham University Hospitals
  • Vantage Oncology USA
  • Mercy Hospitals USA
  • Saskatchewan Cancer Agency Canada

Discuss noise cancelling intercoms for your hospital or clinic

If you're looking to improve the quality of you audio and remove background noise and interference from your medical setting, please speak to us today. We would happily discuss your requirements with you to ensure you get the right products for your hospital.

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