ISBN: | 978-5-5086-6936-2 |
High Quality Content by WIKIPEDIA articles! A bat detector is a device used to detect the presence of bats by converting their echolocation ultrasound signals, as they are emitted by the bats, to audible frequencies, usually about 300 Hz to 5 kHz. There are other types of detector which record bat calls so that they can be analysed afterwards, but these are more commonly referred to by their particular function.