Mini Sound Level Meter

Code: N33GJ

Mini Sound Level Meter is rated 3.9 out of 5 by 8.
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  • Mini sound level meter with integrated microphone for testing noise levels in loud environments
  • Testing range of 40dB up to 130dB
  • Comes complete with one 9V battery to start testing straight away

Product details

Mini Sound Level Meter

• Mini sound level meter with integrated microphone for testing noise levels in loud environments
• Testing range of 40dB up to 130dB
• Comes complete with one 9V battery to start testing straight away
• Measures 55mm x 32mm x 210mm and weighs 135g

What would I use this meter for?
This meter is ideal for use in environments where noise could be a danger to health and safety. You could use it on construction sites where heavy duty tools such as jackhammers are in operation, or at busy airports to show that ear protection is needed in these areas.

How easy is this meter to use?
This sound level meter has been designed with ease of use in mind. Simply press the power button and the meter gives you an instant reading that constantly updates every 0.5 seconds.

How accurate is the sound meter?
This sound level meter comes with a 3.5 digit, large LCD display with 0.1 resolution and is accurate to approximately ±3.5dB.

Technical specification
Sound range Low 40 – 130 dB
High N/A
Frequency weighting C
Resolution 0.1 dB
Microphone Electret condenser
Digital display 3 ½ digit LCD
Power 1 x 9V battery (included)
Product dimensions 55 mm x 32 mm x 210 mm
Product weight 135 g
Package contents Sound level meter
1 x 9V battery
User manual
Rated 4 out of 5 by from This is a very cost effective, and yet surprisingly accurate, little meter. It is fantastic that the power button is soft so the meter does not pick up any noise from depressing the button. However, the Min/Max hold button is very 'clicky' as it uses a tactile switch. This means that you cannot record a maximum sound of <60dB as the meter picks up the click. Other than that, it has a tripod mount, so hand-held noise does not interfere with the reading, and it has a display backlight that varies in intensity as the surroundings darken.
Date published: 2010-02-06
Rated 5 out of 5 by from I bought a Maplin Sound Level Meter to see what it could do for just Ј14.99. I suspected it was a ‘toy’ as it is clearly made to look and feel like a miniature professional sound level meter. Looks cost money – so I suspected the performance would be very poor. In fact I was quite wrong. Before describing its performance – its important to note that this sound level meter reports only the ‘C’ weighed total sound level. ‘C’ weighting treats low and high frequencies equally - which you might imagine was just what you wanted do do. However the ear is not very sensitive to low frequencies and so estimates of noise annoyance normally use the ‘A’ weighted measurement which reflects the ears insensitivity to quiet low frequency sound, sounds like distant trafic noise, air conditioning rumble etc. The Maplin unit doesnt have an A weighting option so you cant really compare the decibel sound levels it gives you with most published tables. Look for ‘dBA’ in reports of noise level, and where it just says dB it means dBA. This meter measures only dBC. Does this matter much? Yes it can- really low frequency noise is often the strongest sound present and its annoyance or loudness value will be over estimated by this instrument by maybe 10 or even 20dBs. Having said that – the unit really does measure actual pressure sound level accuratley to the ‘C’ standard. Although environmental noise professional dont tell you this, the loudness of really loud noise is much more accurately represented by the ‘C’ measurement than the ‘A value! This instrument will give you a true dBC sound level reading which will relate to the loudness for loud sounds but will tend to over rate ordinary medium and low level sounds IF they contain low frequencies. Now for the technical stuff. I took the meter into the labs of UCLs Ear Institute and found the calibration to be spot on from 32Hz to 10kHz. At 1kHz the reading was within +-2dB from 44 to 114dB C. A look inside revealed a surface mount pcb packed with about 10 ICs and as many trim pots – far too many for the simple function. This is clearly a multifunction circuit designed to do a lot more in other models- including an A weighted version. You need to decide if the dBC model is what you really need - but there is no doubt that the unit does what it says it does.
Date published: 2009-09-16
Rated 4 out of 5 by from Has a couple of annoying features. The light sensitive backlight comes on, even if there's enough light to be able to see the reading without it. Would much have preferred a toggle button for switching the backlight on or off as required. The auto power off function turns the device off after 10 minutes (not the 15 minutes advertised) which can be a bit of a nuisance if you get your timing wrong. The device only uses the C weighted filter, not the more commonly used A weighting. That said, when it comes to things like monitoring traffic noise, the C weighting probably provides the more accurate sense of realism. The C weighting tends to give a higher reading the A weighted filter which, from the qualitative point of view, is probably a truer reflection of what the ear can actually hear. That's a very subjective way of looking at things, I know. What one person may find loud and intrusive, another person may not. But at the end of the day, no matter how sophisticated the devices we use, we are left with the evaluation of our own perceptual experience. Overall though, a decent bit of kit for the price.
Date published: 2011-05-16
Rated 1 out of 5 by from I used this for monitoring a live sound stage at a club and found that the level jumped all over the place. Ended up using the venues own meter as this was too unreliable and inaccurate. moderator note: audio is not a static signal level. live audio will range drastically from low to high db peaks. This is what the "min max hold" options are for on these sorts of level meters. Many standalone in house db meters are set to only show the max hold level (which is likely to be why the in house unit's signal did not change as drastically)
Date published: 2010-09-06
Rated 5 out of 5 by from It was a great little meter until I had to change the battery and accidentally touched the contacts as I was removing the old battery. There is no reverse polarity protection and there was a short bright flash. Its now a smoke machine.
Date published: 2012-07-20
Rated 2 out of 5 by from I received a maplin branded meter, identical in appearance. It fluctuates too much, trying to measure my noisy computer, left on it's own, it jumps between 30+ and 50+ db! while the computer's noise was steady (fans). I bought a $1 ipod/iphone app and it seems better (still not great). I'm returning mine.
Date published: 2011-12-14
Rated 5 out of 5 by from Useful Pocket tool Good little pocket tool - can carry anywhere. For example - useful for the theatre on cruise ship. Set to record max and you know when to leave the theatre before suffering permanent hearing damage.
Date published: 2016-08-17
Rated 5 out of 5 by from A useful tool in areas where visual proof of excessive noise is a problem A good compact piece of kit, it should be in every sound engineers tool box. It would also be useful for health & safety monitoring in industry.
Date published: 2016-08-17
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Is there any available yet? Can you tell me one product similar to this one?

Asked by: Eduardo
This is a discontinued item so will not become available again. for a portable sound level meter we would recommend the item below:
Answered by: Dale
Date published: 2017-06-02

How do you change from dBC to dBA

Asked by: Tom1
Unfortunately we no longer stock this item as it has been discontinued from our range.
Answered by: Billy
Date published: 2017-04-15

Does this unit make storable records

Asked by: Baz1
This DISCONTINUED product is now no longer available. The unit took live readings only, there was no facility to store or log the data.
Answered by: Les
Date published: 2017-01-25

Can this product be used to monitor sound level of a barking dog

Asked by: Zorro
Yes this will measure the sound levels from the ambient sound close to it
Answered by: Dale
Date published: 2016-10-07

Does this sound meter have the means of tracking the peak audio level measured from a defined start point in time. Such that the reading only changes if it detects a larger signal than at all previously heard.&nbsp;

Asked by: LBWW
No, I am sorry but the item will not work for this use.
Answered by: Dominic
Date published: 2016-08-08

do you have a manual for this please

Asked by: shar
Sorry we do not have a manual on file for the item and it is discontinued.
Answered by: Dominic
Date published: 2016-05-24

Can I have tangible proof that my neighbours are making too much noise?

Asked by: Fed up with neighbours
This service is for frequently asked questions and does not allow two way communication, In order for us to best assist you with your technical issue please contact us on the details below: 0333 400 9500 or email
Answered by: Brad
Date published: 2016-01-03

Does this meter show the sound level at each seperate spectrum frequency ? i.e 63htz, 125htz, 250 htz etc to 4000Htz

Asked by: Cliff
No, I am sorry but the item in question does not support use in your intended application.
Answered by: Dominic
Date published: 2015-12-16
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Bulk Prices

Item code Item name Quantity Price
N33GJ Mini Sound Level Meter (1+) £9.99

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