Nortel NT8B41 Key Lamp Module for M7324 (Black, Refurbished)Nortel NT8B41 Key Lamp Module (KLM) for M7324 The Nortel NT8B41 Key Lamp Module (KLM) is an expansion module designed to enhance the functionality of the Nortel M7324 phone. Featuring 48 programmable buttons with LCD indicators, it is ideal for receptionists, administrative assistants, and high call volume users. By adding up to two modules per phone, users can significantly increase efficiency with quick access to extensions, lines, and system