The Pettersson M500
An ultrasonic microphone for your Windows tablet
An alternative to Walkabout or Echo Meter Touch
Call me on 0333 9000 927 for a chat
The Pettersson M500 has my 60 day 100% Satisfaction Guarantee & extra year's warranty

Hi there,

What can I say about the Pettersson M500?

If you're looking for a hand-held microphone to connect to your Windows tablet and give you a real-time sonogram display, the Pettersson M500 is the obvious choice. For connection to Android or iOS systems, the Pettersson M500-384Batbox Baton XD and the Wildlife Acoustics Echo Meter Touch are the ones to consider.

All units record bat calls very efficiently, so your choice is going to be guided as much by personal preference and aesthetics as anything else. The M500 connects via a cable to your Windows tablet and the EM Touch fits snugly onto an iPhone or iPad (Android coming soon), whereas the Baton XD is connected via a cable to either Android or iPhone. The new M500-384 connects to a wide range of devices including Android and Linux.

Personally, I prefer a 'one-piece' unit, so would go for an Echo Meter Touch or Walkabout.

I want you to be 100% happy with your purchase so call me on 0333 9000 927 for advice.

Warm Regards,


Your Pettersson M500 comes with my 60 day 100% Satisfaction Guarantee and my exclusive 2 year warranty for £465 including EU delivery and VAT
(non-EU delivery will be charged at cost after purchase and if you have an EU VAT number or are outside the EU, we can supply without VAT)

High-quality full spectrum recordings at a price never seen before!

The M500 microphone is easily used with a tablet PC or laptop to record bat calls and other ultrasonic signals with the highest quality.

The M500 USB Ultrasound Microphone comes in a small and durable aluminium enclosure. It utilizes the same advanced electret microphone technology as the well-known D500X detector and can be used both in directional and omnidirectional modes (with or without the directional horn).

Low-noise technology, high sampling frequency and efficient anti-aliasing filter provide highest quality recordings.

The microphone comes with a free 'Lite' version of the easy-to-use BatSound Touch recording program that saves the recordings as 16 bit wav files. Real-time display of the waveform and the spectrogram as well as real-time monitoring of the bat calls are also available. The program offers various triggering modes; manual and automatic, with or without pre-trigger, level triggered or frequency triggered operation.

Most contemporary Windows tablets/laptops will work (Windows 7 and up). Windows RT is not supported! We use tablets with a simple Intel Atom processor (1.33 GHz) and 1-2 GB RAM with good results. Of course, faster/larger RAM is always better, but the above mentioned will do.

Please note that the USB port must be a USB2 high speed port (most tablets/laptops have that) and in the case of a tablet, if it is a micro USB port, it must be an OTG type.

Comment from a user: The M500 will geotag your recordings. In addition to that, when using the M500 with GPS positioning there are some very important key differences in functionality between running a tablet with internal GPS positioning which interfaces with the windows location service and using an external Bluetooth or USB GPS device.


Microphone: Advanced electret; Sampling frequency: 500 kHz; ADC resolution: 16 bits; Interface: USB 2.0, high speed; Anti-aliasing filter: 8th order, 210 kHz; Real-time monitoring: Through the PC sound card (down-sampling); Size: 43 x 114 x 13 mm (incl microphone horn); Weight: 60 g; Power: USB bus powered; Operating system: Windows 7, Windows 8, Windows 8.1, Windows 10

Select the type of bat detector you're looking for below
Passive Zero Cross

Recorders for leaving out on site and producing zero crossing files.

Passive Full Spectrum

Recorders to be left out on site and producing full spectrum files.

Active Full Spectrum

Hand-held recorders that can record full spectrum files and most of them log GPS co-ordinates.

Comment from a client:

"My bat detector microphone failed during a dawn survey and knew that I had a group of dusk surveys starting in two days time. I was not in a good place as I did not have a spare, but my equipment was less than a year old.

After my survey I contacted Martin by email and he called me back on the same day, a few hours later, after a quick nap. He told me he did not have a part in stock, but had already contacted the supplier on my behalf.

The next day I received a replacement part, free of charge and express delivered from Switzerland. I thought it was amazing, and could not believe it was resolved so quickly.

Due to Martin's exceptional service I was good to go with the surveys, and I really would like to thank Martin and Wildlife & Countryside Services for making the dusk surveys happen." 

David Kent

© 2015 Bat Detectors UK, part of Wildlife & Countryside Services