Easy Customization and High Expansibility--•HD Audio •Efficient Installation and Provisioning •Secure Transport and Interoperability

•Enjoy Wireless Freedom •A Better User Experience with Android 9.0 System •HD Audio and HD Video •Improved Security Performance

• 2.7" 192x64-pixel graphical LCD with backlight • Dual USB ports • Dual firmware images • T4U Auto-P template unified • T4U firmware unified • Up to 12 SIP accounts • PoE support • Dual-port Gigabit Ethernet • USB headset and EHS support • Wi-Fi via WF40/WF50 • Bluetooth via BT40/BT41/BT52 • Stand with 2 adjustable angles • Wall mountable • Handset with hall switch

• Runs Android 9.0 • 7 inch (1024 x 600) capacitive adjustable touch screen • Supports Yealink Bluetooth Handset BTH58 • 720p30 HD video • Optimal HD audio, Yealink Noise Proof Technology • Yealink’s SDK (Software Development Kit) • DoorPhone Features (Preview, One-button Open, Monitoring) • Built-in Bluetooth 4.2 and Dual Band 2.4G/5G Wi-Fi • 2 x USB 2.0 ports for USB headset, media and storage applications • Up to 16 SIP accounts • Up to 3-party video conferencing • Up to 10-party video/audio mixed conferencing (up to 2 video calls) • Dual-port Gigabit Ethernet, supports PoE • Wall mountable • Supports up to 3 Expansion Module EXP50 • Supports Yealink/Unify Square Device Management Platform