This Tellabs 8001 regulated power supply is an excellent addition to your telecom systems. It has been removed from a working unit and is guaranteed to function properly. The power supply has an input voltage of 120V and can provide a regulated output of either 24V or 48V, depending on your needs. Condition is preowned/used. Removed from a working unit! Outside has signs of age and blemishes. Please see all pictures as they are part of the description! Packed with care and shipped with insurance! Thanks