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EMFields Acoustimeter AM11 EMF Detector

The EMFields Acoustimeter AM11 EMF Detector is an easy-to-use and incredibly powerful radio frequency (RF) / microwave detector. It measures both peak and average signals using a combination of LEDs and number readings on a bright text screen.

The AM11 EMF meter reads almost all modern wireless technology, including mobile phones, cordless phones, smart meters, and Wi-Fi. This EMF meter with a sleek design is suitable for those with severe electrosensitivity as it is sensitive down to 0.02 V/m. It also has an audio output that helps determine the source of the exposure.

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£350.00 VAT Excluded

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SKU EMF10041 Category Tag


Presenting radio frequency (RF) measurements as an audio signal, the Acoustimeter AM11 EMF RF Detector will measure both peak and average readings at the same time. Covering all frequencies from TETRA to WiMax and Wi-Fi. It accurately measures all incoming radiation from 200 MHz to 8000 MHz (8 GHz) and was designed using many years of real-life measurement experience.

Expertly designed so that you can see the levels of microwave signals, you will be able to determine the safety of the environment around you. No matter what the level of microwave radiation, the Acoustimeter will pick it up – whether it’s below 0.02 V/m or it seems as though there is no modulated radiation. Covering the frequencies produced by most communication systems, it’s a piece of kit that you won’t want to miss out on.

The text display offers high accuracy with a lower update speed, giving you time to take note of the readings.

When it detects RF or microwave radiation, the readings will show on the OLED text display and will light the LEDs up. Updating according to the levels in the room, the EMF meter will allow you to find different hot spots in the area. It is an easy and user-friendly EMF meter whose text display offers high accuracy with a lower update speed, giving you time to take note of the readings.

For extra convenience, it also has a speaker alongside an audio output socket that you can insert headphones in, which will give you an idea as to which devices are giving out the microwave radiation. After some practice, you will become more familiar as to which devices have a higher reading than others – however, it’s important to remember that if there are several devices that give off RF, the sound might be harder to identify.

Additional information


Radio Frequencies (RF)


Audio Signal, Long Warranty

Tech Specs

  • Two line OLED displaying actual levels:

– Peak exposure levels in V/m

– Peak hold levels in V/m

Average exposure levels in µW/m2

  • Two lines of fast LEDS displaying showing:

– Peak exposure levels in V/m

Average exposure levels in µW/m2

  • Measurement range: 200 – 8 000 MHz ±6 dB ±0.02 V/m
  • Sensitivity (Peak Display): 0.02 V/m – 6.00 V/m
  • Sensitivity (Average Display): 1 µW/m2 – 100 000 µW/m2
  • Pulsing signal may be heard through the internal speaker
  • Power source: 2x AA Alkaline or Rechargeable (1.2 – 1.5V)
  • Power draw: 100-150 mA at 3V
  • Battery life: 20 hours

Typically 15 hours on two new 1500 mAhr AA alkaline cells and

– Typically 25 hours on two charged 2700 mAhr NIMH rechargeable cells

  • Size (mm): 190 x 102 x 33 (LxWxD)
  • Weight: 280g, excluding batteries


How does it work?

The Acoutstimeter has a simple design with an on/off button. Once it is switched on, it will show the readings (whether they are audible or visual) on the LCD screen. The internal state-of-the-art antenna is located at the top of the device, allowing for a more accurate reading.

The signals themselves will primarily be measured when the device is situated behind the instrument, but it also has the capacity to measure sources when they are located to the side. If the source is placed in front of the EMF meter, the LCD will perform like an RF screen.

How is the sensitivity displayed?

If it’s a peak display, it will appear as a figure between 0.02 V/m and 6.00 V/m. If the source is giving off an average display, the sensitivity will appear between 1 µW/m2 and 1000 µW/m2.

How is the pulsing signal heard?

It can be heard through the internal speaker.

What frequencies does the Acoustimeter cover?

The EMF device displays the peak levels of microwave electromagnetic fields from 200 MHz up to over 8000 MHz (8 GHz).

Does this measure magnetic fields?

No, if you require a magnetic field measuring device check out the PF5 also by EMFields

Is the carrier bag included?

Yes, the Acoustimeter is shipped with its own protective carry bag.

Does it come with a warranty?

Yes, the Acoustimeter comes with a 2-year warranty

Can I return it?

To offer our customers the most efficient service, we offer a ‘No Quibble’ returns policy that allows you to return the EMF meter within 30 days of purchasing it. Please see our returns policy here: https://emf-protection.co.uk/returns-policy/

Do you offer support?

Our customer’s purchasing experience means a lot to us. So we provide free technical advice and support to ensure that they are fully satisfied with the product. Our experienced EMF shielding experts have years of experience working within the field and can answer any queries that you have regarding the EMFields Acoustimeter.

How big is the Acoustimeter?

The Acoustimeter is 190 x 102 x 33 mm (LxWxD), meaning that it’s easily transportable.

What power source does it require?

The EMF meter is powered by 2 x AA alkaline or rechargeable batteries that have 1.2 – 1.5V capacity. It draws 105 mA at 3V.