| Supply Voltage | 9 VDC, center negative |
| Supply Current | Less than 250 mA |
| Loop Current Draw | Less than 1 mA |
| Loop Voltage | 30 to 105 VDC |
| Ringing Voltage | 60 to 130 VAC |
| Insertion Loss | Less than 0.3 dB |
| Voltage Drop | 2.7 VDC at 20 mA loop current |
| Dimensions | 8.0” W x 2.0” H x 6.25” D |
| Ringer Equivalence | (REN) 0.1 B |
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