The EXP40 Expansion Module for the SIP-T46G and SIP-T48G, expanding the functional capability of your sip phone to a whole new level. It features a large graphic LCD. Two pages of 20 flexible buttons are shown on the display can be programmed up to 40 various features, the productivity-enhancing features include BLF/BLA, speed dialing, call forward, transfer, park, pickup, etc. Display – 160×320 graphic LCD with 16-level grayscales. – LCD Backlight. – Two page views are possible. – Different icons for each function shown on the LCD. Features Keys and Indicator – 20 physical keys each with a dual-color LED – 20 additional keys through page switch – 2 independent control keys are used for fast switch pages – Programmable for Shared Line, BLF List, BroadSoft Group, Call Park, Conference, Forward, Group pickup Group listening, LDAP, Pick UP, XML Browser, Zero-SP-Touch…… Physical Feature – Wall mountable. – Stand with 2 adjustable angles. – Expansion module (?2) is powered by the host phone. – Supports up to 6 modules daisy-chain. – 2xRJ12?6P6C?ports for data in and out. – Dimension (W*D*H*T): 127mm*213mm*167mm*45mm. – Applies to Yealink IP Phone. – Operating temperature: -10~50°C. – Operating humidity: 10-95%. Package Features – Qty/CTN: 10 PCS. – N.W/CTN: 6.7 kg. – G.W/CTN: 7.6 kg. – Giftbox size: 237mm*154mm*100mm. – Carton Meas: 520mm*317mm*247mm.