With this Bat Detector you can listen to ultrasonic chirps, smacks & clicks from these amazing creatures. Special circuitry detects the human-inaudible sounds emitted by bats & processes them into a form that human hearing can discern. Features include * high level audio output * built-in front-facing weatherproof loudspeaker * advanced low noise IC preamplifier stage * high stability 'easy tuning' linear heterodyne oscillator * new audio circuits * increased gain & sensitivity * convenient bottom mounted headphone socket (mutes Loudspeaker) * line level tape recorder socket
- constant level regardless of volume control * top lit calibrated frequency dial