24 programmable buttons with indicators (for lines, features, and autodial numbers) Provides busy lamp field/direct station select support Multiple appearances of target line and hunt groups Multi-segment indication Can add 4 T24s per T7316E without the use of a Station Auxiliary Power Supply (SAPS) Can add 9 T24s per T7316e with the use of a Station Auxiliary Power supply (not included) Desk or wall mount The Norstar T24 KIM is compatible with BCM 3.5 or later and Norstar 6.1 or later