Yealink EXP40 LCD Expansion Module

Specifications:

• Supports SIP protocol
• 4.3-inch color LCD display
• Three pages of 20 programmable buttons (up to 60 total buttons)
• Dual-color LED indicators
• Daisy-chainable (up to 3 modules)
• Wall-mountable (bracket may be sold separately)
• Dimensions: 156.5mm (L) x 122mm (W) x 42.5mm (H)