Telephone Amplifier System (430-0200) Specifications Faxback Doc. # 32058 Speaker:.................................................2 1/4-Inch; 32-Ohm Microphone:..............................................Built-In Condenser Dimensions:....................................3 1/2 x 5 7/8 x 3 1/8 Inches Weight:..............................................................14 oz. Telephone Amplifier Reception (f=1 kHz. MIC Open, Loop Current at 40 mA): Max. Power:.........................................................30mW Phone Line Input Level:...........................................30 dBm Transmission (Loop Current at 40 mA): Output Level:....................................................-18 dBm Sound Pressure Level:..............................................90 dB OPERATING PARAMETERS This information is provided to help you answer possible technical questions from your phone company. Interface:.......................................................Loop Start Current:.............................................20-80 mA DC (Off-Hook) Resistance: On-Hook:..............................................More than 10 MOhms Off-Hook:.......................................................300 Ohms Power Consumption:.............................................9 VDC 100 mA Recommended Adapter (273-1455):................................9 VDC 300 mA (CS 12/7/95)