A user-friendly, high-quality ultrasonic detector. Pettersson's D100 has a microphone system with three microphones designed for maximum sensitivity. With a backlit frequency dial, you have an easy reading at night.
a basic heterodyne detector. Has a microphone system.
Product information
Type: Heterodyne
Microphone: Electret + ceramic
Frequency range: 10 - 120 kHz (min.)
Bandwidth: 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9 V)
Quiescent current: 16 mA typical
Size: 113 x 71 x 33 mm (113 x 71 x 63 mm including knobs)
Weight: 220 g including battery
Outputs: 2 x 3.5mm jacks for headphones and tape recorder