The Yealink expansion module enhances IP phone functionality with 38 programmable keys, each featuring dual-color (red/green) LEDs for line status visibility. By daisy-chaining up to six modules, users can access 228 programmable keys. It supports BLF, BLA, speed dial, call pickup, intercom, hold, transfer, voicemail, forward, and DND functions, making it a powerful productivity tool.
Designed for Yealink SIP-T28P and SIP-T26P phones, the module (up to two units) can be powered directly by the host phone. Installation is simple with 2x RJ-12 (6P6C) ports for data input and output. Physical specifications include a compact design measuring 132×143×42mm, weighing 255g, and operating within 10–95% humidity. It supports storage temperatures up to 60°C and uses a power adapter with AC 100–240V input and DC 5V/1.2A output.
