The durable Yealink EXP39 LCD Expansion Module / Sidecar is designed to improve 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 operate. What’s more,could add 20 additional keys through the page switch, to make programmable keys up to 40. 

Features: 

• Rich visual experience with 160320 graphic LCD
• physical keys each with a dual-color LED
• Additional keys through page switch
• Daisy-chain 6 modules up to 120 keys
• Supports BLF/BLA, speed dialing, call pickup, etc.

Dimensions: 5.71 x 7.17 x 3.94 inches