Features Large 800*480 color graphic LCD 20 programmbale Keys Each with a dual-color LED Daisy-chain 6 modules for up to 240 DSS Keys 2 control keys for fast switch pages Rich features, each with different Icon Physical Feature 5.0'TFT-LCD, 800*480 pixel 20 programmable keys with dual color LED 2 contral keys 2 RJ45 ports(1 uplink,1 downlink) Supports up to 6 modules daisy-chain Adapter output: 5V/1.2A Adapter Input: 100-240V General Features Call hold, Call park, pick up Redial, Call Return, Forward, Call transfer Caller ID display, DND, Conference Speed dial, Voicemail, Message BLF, Shared line, private hold, public hold... Certificates CE FCC RoHS...