This is a In-line unit to adapt equipment with 48 volt phantom powering (eg. ENG mixers) to supply T-powered microphones. Phantom power end is XLR 3 pin male, T-power end is XLR 3 pin female. For best results, this unit should be located as near as possible to the microphone.
This is a used unit from Canford which retails for around £80 ext Vat