Audio features
• Built-in 3-microphone array
• 360° voice pickup
• Optima HD voice
• 20ft (6m) voice pickup range
• Muting the microphone with touchpad
• Background noise suppression
• VAD (Voice Activity Detection)
• CNG (Comfort Noise Generator)
• AEC (Acoustic Echo Canceling)
• Yealink Noise Proof Technology
• Up to 4 units can be cascaded

Physical features
• 1 × RJ45 for ethernet and power
• 1 × RJ45 for cascading
• Power over Ethernet (IEEE 802.3af)
• Power input: PSE 54V/0.56A or PoE 48V/0.27A
• Dimension (W*D*H):
169mm x 171.5mm x 37.5mm
• Operating humidity: 5~90%
• Operating temperature: 0~40°C (+32~104°F)

Package content
• VCM34
• 3m Ethernet Cable
• Silicone Pad
• Quick Start Guide

Package features
• Qty/CTN: 10 PCS
• N.W/CTN: 4.26 kg
• G.W/CTN: 4.93 kg
• Giftbox size: 310mm*196mm*80mm