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Charging time (spare battery) approx. 10-12 h
Power supply 12 V DC via NT 820 mains unit
Weight approx. 94 g (without battery)
Dimensions diameter: 150 mm, height: 47 mm
Receiver
AF frequency response 40 Hz ....... 15 kHz
S/N ratio 60 dB A rms
Power supply 2.4 V via BA 151 battery
Operating time approx. 4 hours per battery
Weight approx. 35 g (without battery)
Dimensions length: 95 mm, width: 63 mm, height: 35 mm
Output voltage max. 700 mV at 32 Ω
Induction loop
AF frequency response 300 ....... 10,000 Hz
Impedance 47 Ω
Magnetic field strength
at the hearing aid 100 mA/m at 1 kHz and 10 mVA
Guarantee 2 years
Set 820 S_511981_0106_Sp7.book Seite 20 Freitag, 9. Januar 2009 8:51 08