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Pettersson D500X bat recorder

Pettersson D500X bat recorder

The D500X is an ultrasound recording unit intended for long-term, unattended recording of bat calls. In contrast to time expansion bat detectors, the D500X records full-spectrum ultrasound in real time with virtually no gaps between recordings. The recorder is equipped with four slots for CF cards, which typically makes it possible to leave the unit in the field for more than a month. The triggering system allows the device to automatically start recording as a sound is detected.


Free extra year's warranty, plus a free book or voucher worth £35!


The D500X Mk II is as easy to use and provides the same features as the classic D500X, with the following exceptions:

  • It does not include an internal microphone. Instead it ships with an external microphone which is either directly connected to the microphone jack or through an extension cable (sold separately). The microphone jack is an XLR type so no adapter cable is required.
  • It is powered by 4 C type batteries which last roughly three times longer than the AA batteries used in the classic D500X.
  • The jack for external power is a standard 2.5 mm DC power jack for easy connection.


Manufacturer's warranty is 1 year. Buy from us and get a 2 year warranty. Microphone warranty is 1 year.

Specifications for D500X Mk I/Mk II

Weight1200/1300 g
Dimensions165 × 170 × 53 mm

Direct, high-speed recording


Advanced electret, jack for external microphone / external microphone (included)

Frequency range

15 kHz – 190 kHz (500 kHz sampling rate, high-pass filter enabled)
5 kHz – 190 kHz (500 kHz sampling rate, high-pass filter disabled)


External microphone, external trigger, external DC supply


Four on/off periods per day


4 x AA size, Alkaline or NiMH recommended / 4 x C size batteries

External DC supply

5.5-8 V, typically ca. 200 mA (average, when recording), depends on CF card type and number of CF cards


ADC Resolution: 16 bits
Anti-aliasing filter: Yes, 8th order, 190 kHz cut-off frequency
Sampling rates: 44.1, 300, 500 kHz (optimized for 500 kHz)
Recording length: 0.3, 0.5, 1, 2, 3, 5, 10, 20 sec or manual recording
Recording medium: CF card, 4 slots

    VAT Included
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