Nortel NT8B41 Key Lamp Module for M7324 (Grey/Refurbished)The Norstar Key Lamp Module (KLM) is ideal for administrative assistants, receptionists, and other centralized call answering personnel. By attaching up to two Key Lamp Modulas (KLM), an additional 96 memory buttons can be added to the Norstar M7324 telephone, creating a total combination of 120 lines, features, or autodials. More Information Mnfr. Part #: NT8B41 Each Nortsr Key Lamp Module (KLM) has 48 programmable buttons with LCD indication. Two