Build your own bat detector! This kit form of the Magenta bat detector makes an economical good basic detector.
Please note that this is not a simple kit and to build it successfully you should have soldering and electronics skills and be able to understand circuit diagrams. (If you are in any doubt we recommend choosing the Magenta MKIIb ready-built version).
Frequency range: 20-140KHz
Size: approx. 14 x 8 x 3.5cm
Weight: approx. 260g including battery (not supplied)
Outputs: 1 socket for headphones (NB no output socket so cannot be used for recording)