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optional AC adapter | 9-12VDC/VAC @ min. 200mA |
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operating current range | 18mA to 55mA |
phone line voltage on-hook | 24VDC to 70VDC (nominally 48VDC) |
phone line voltage off-hook | 8 to 20VDC (nominally 14VDC) |
ring sensitivity | 30 - 120VAC RMS |
operating temperature range | 32 to 122F (0 to 50C) |
storage temperature range | -4 to 158F (-20 to 70C) |
relative humidity | Up to 95% (non-condensing) |
frequency response | 550Hz - 3400Hz +/- 3db. |
operational loop impedance | 600 ohms |
size | 5.5in x 3.2in x 0.75in (140mm x 81mm x 19mm) |
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weight | 0.37lbs (0.17Kg) |