Welcome to Pettersson Elektronik

Pettersson Elektronik proudly presents the new

 M500 USB Ultrasound Microphone

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. In stock for immediate delivery!




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 an easy-to-use Windows 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 pretrigger, level triggered or frequency triggered operation.

A coming version of the BatSound software will also support the M500.



Microphone: Advanced electret

Sampling frequency: 500 kHz

ADC resolution: 16 bits

Interface: USB 2.0, high speed

Anti-aliasing filter: 8th order, 190 kHz

Real-time monitoring: Through the PC sound card (down-sampling)

Size: 42 x 114 x 23 mm (incl microphone horn)

Weight: 75 g

Power: USB bus powered

Operating system: Windows Vista, Windows 7, Windows 8

Price: SEK 3500 (+ shipping/VAT)


Pettersson Elektronik is a company specialized in electronic equipment for detection and analysis of bioacoustic ultrasonic signals. With our Ultrasound Detectors, or bat detectors, you can listen to the ultrasonic calls from bats, a great aid in identifying different species. We also supply analysis software for sound analysis on personal computers.