- One 1151A1 power supply will support two or more telephones with or without an adjunct that do not exceed 20 watts of power
- The maximum loop range between the telephone and the power supply is 250 feet
- This power supply replaces the MSP-1, KS-22911-L1/2, 329A and 353A DC power supplies and the 2012D AC transformer
- Unit has a green LED that shows the unit has power on the Phone mod jack pins 7&8 when AC power is applied
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