Velleman Stereo Batscanner and Ultrasonic Sound Detector

Hi there -

Just built the stereo batscanner - but noticed the electret elements were not clearly marked - does anyone know what they are?

Seems like this has been an issue before.
https://forum.whadda.com/t/kit-8118-stereo-ultrasonic-sound-and-bat-detector/28726

Hello @fujiapple ,

The electret elements are the microphones. These can detect the ultrasonic sound of bats.
info about electret microphone: Electret microphone - Wikipedia

Product code of the electret mic. is M63 available in our webshop M63: ELECTRET MICROCEL Ø6mm – Velleman – Wholesaler and developer of electronics or at our local shops: https://www.velleman.eu/shops/

specs:

Best Regards,
Velleman Support

Thanks, Velleman - are there any additional specs for this mic? Specifically, frequency response. I’m interested in potentially experimenting with other electret elements.