The ultrasound detector D200 has a better accuracy on the frequency setting than the D100 due to its digital display, but otherwise works in the same way. The screen has a green backlight. The numbers on the display are large and clear so you can easily see which frequency you are listening to. With its heterodyne detection, it gives an indication of which species you have around you and combines three microphones to achieve maximum pickup in the entire frequency range, which covers 10 - 120 kHz. The frequency and volume controls are located on the side of the detector for easy one-handed operation.
Product information
Type: Heterodyne
Microphone: Electret
Frequency range: 10 - 120 kHz
Accuracy: +/- 0.15 kHz
Bandwidth: 8 kHz (+/- 4 kHz), -6 dB
Battery: 1 x IEC 6LF22 (9 V)
Current: 17 mA typical. including LCD backlight
Size: 119 x 60 x 25mm
Weight: 150 g including battery
Outputs: 2 x 3.5mm jacks for headphones and tape recorder