link 1.0 Djem Guerreru Inc. https://www.djemguerreru.com 21600 JOITO's https://www.joitos.com https://cdn.joitos.com/GENERAL/10/108/1081/10816774.V0.jpg 400 250 https://www.joitos.com/item/26963307/Yealink%2DIP%2DPhone%2DExpansion%2DModule - 38 programmable keys each with a dual-color LED- Daisy-chain 6 modules for 228 programmable keys- Dual color (red or green) LEDs for line 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 54.12 USD 25 Electronics & computer--Office electronics--Telephones