Yealink EXP40 T4 Series Expansion Module

The Yealink EXP40 T4 Series Expansion Module is a powerful productivity accessory designed to extend the capabilities of compatible Yealink T4 Series IP phones. Ideal for receptionists, operators, administrative assistants, call center agents, and other high-volume call users, the EXP40 provides additional programmable keys that simplify call handling, speed dialing, busy lamp field (BLF) monitoring, and contact management.

Featuring a large 160 x 320 pixel graphical LCD display with backlighting, the EXP40 provides clear visibility of contacts, extensions, and call status information. The module includes 20 programmable keys, each equipped with dual-color LED indicators that provide instant visual status updates for monitored lines, contacts, and features.

Two dedicated page control keys allow users to quickly switch between multiple pages of programmable buttons, significantly expanding the number of available functions and contacts. When deployed in multi-module configurations, the EXP40 can support hundreds of programmable entries, making it an ideal solution for businesses with extensive call routing and monitoring requirements.

The expansion module is powered directly by the host phone, eliminating the need for a separate power source in most installations. Up to six EXP40 modules can be connected in a daisy-chain configuration, providing as many as 240 programmable buttons for advanced attendant console applications. For installations exceeding three connected modules, an external 5V/1.2A power supply may be required.

Designed to match the appearance and functionality of Yealink T4 Series phones, the EXP40 features adjustable viewing angles, wall-mounting capability, and seamless integration with supported Yealink SIP phones. Its flexible deployment options and extensive programmable capacity make it an essential accessory for organizations seeking to improve call management efficiency.

Features

160 x 320 graphical LCD display
Backlit screen
20 programmable keys
Dual-color LED indicators on each key
Two independent page control keys
Quick access to contacts and extensions
Busy Lamp Field (BLF) support
Speed dial support
Line monitoring capabilities
Powered by the host phone
Supports up to 6 expansion modules in a daisy-chain configuration
Up to 240 programmable buttons with multiple modules
Adjustable stand with two viewing angles
Wall-mountable design
Includes 1-Year Warranty

Specifications

Product Type:
- Expansion Module
Display:
- 160 x 320 Graphic LCD
- Backlit
Programmable Keys:
- 20 Physical Keys
- Dual-Color LED Indicators
Navigation:
- 2 Dedicated Page Control Keys
Expansion:
- Supports Up To 6 Daisy-Chained Modules
- Up To 240 Programmable Buttons
Power:
- Powered By Host Phone
- Optional 5V/1.2A Power Supply Required For Larger Multi-Module Deployments
Mounting:
- Adjustable Desk Stand
- Wall Mountable

Compatibility

Compatible with:

Yealink SIP-T46G
Yealink SIP-T46S
Yealink SIP-T48G
Yealink SIP-T48S

Please verify phone compatibility before deployment.

Ideal Applications

Receptionists
Administrative Assistants
Operators
Executive Assistants
Call Centers
Customer Service Teams
Front Desk Staff
High Call Volume Environments

Includes