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D230 Ultrasound DetectorA combined heterodyne and frequency division detector with backlit, large digit, accurate digital display, showing the tuned frequency in the heterodyne mode. The frequency and volume controls are on the side of the case, making it easy to adjust. Using stereo headphones, the heterodyne signal is heard on the left channel and the frequency division signal on the right channel. When the built-in speaker is used, a switch is used to select the heterodyne or frequency division signal. Specifications Type: Heterodyne and frequency division Microphone: Electret Frequency range: 10-120 kHz (min.) Display accuracy: ? 0.15 kHz Bandwidth: 8 kHz (? 4 kHz), -6 dB Battery: 1x IEC 6LF22 (9 V) Quiescent current: 23 mA typ. including LCD backlight Size: 119 x 60 x 25 mm including knobs Weight: 160 g including battery
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 "D230 Ultrasound Detector")
