Yealink EXP39 LCD Expansion Module Yealink EXP39 LCD Expansion Module is designed for improving the power and flexibility of the Yealink advanced IP phones SIP-T26P and SIP-T28P. It features a 160x320 graphic LCD and 20 physical keys each with a dual-color LED. With them, you will be very clear which function had been set and easy for operation. What’s more, you could add 20 additional keys through page switch, to make programmable keys up to 40. Each programmable key supports the functions include speed dialing, BLF/BLA, intercom, call forward/transfer/hold/park/pickup/return, etc. It allows 6 EXP39 to be daisy chained at most. Yealink EXP39 is ideal for receptionists, administrative assistants, call center agents, power users, and executives who need to monitor and manage a large volume of calls on a regular basis. Key Features Rich visual experience with 160x320 graphic LCD 20 physical keys each with a dual-color LED 20 additional keys through page switch Daisy-chain 6 modules up to 120 keys Supports BLF/BLA, speed dialing, call pickup, etc Technical Specifications 160x320 graphic LCD with 4-level gray scales 20 physical keys each with a dual-color LED 20 additional keys through page switch Supports up to 6 modules daisy-chain Different icons for each function shown on the LCD Dual-color LED for status information Supports Busy Lamp Field (BLF) Bridge Line Appearance (BLA) Programmable for speed dialing, call pickup Intercom, hold, transfer, voicemail, forward, DND… Applies to Yealink IP Phone SIP-T28P and SIP-T26P Expansion module (≤2) is powered by the host phone Physical Features: 2xRJ12（6P6C）ports for data in and out Power adapter: AC 100～240V input and DC 5V/1.2A output Weight: 290g Dimensions: 145x182x100mm Operating humidity: 10～90% Storage temperature: max 40°C