Key Specifications/Special Features: Specifications: With deep echo cancellation Bi-directional noise suppression purifies voice signal from two parties Hyper-cardioid directional microphone plus AGC With hi-fi audio amplifier Rare-earth neodymium magnet speaker Easy installation and easy operating Receive and send IR signal by remote control DTMF dialing supported by IR remote control Telephone features: on/off, redial, flash, store, memo, mute, hold and more LCD with caller ID With sonic clarity patented voice processing technology Compatible with PSTN analog networks Exterior color: dark gray Voltage: 110 to 240V AC Frequency: 50 to 60Hz Power: 15W Network interface: RJ11 analog PBX or PSTN Audio bandwidth: 300 to 3,400Hz Reverberation time: 0.4 seconds Noise degrees: 48dBA Humidity: 20 to 85% RH Main body dimension: 300 x 63mm Suitable for conference rooms of up to 30m², microphone covers 3m range. Payment Details: Payment Terms: T/T in Advance Minimum Order: 100 to 199 Set Delivery Details: FOB Port: Shenzhen (China) Lead Time: 25 - 30 days Product Certifications: Certificate Standard: CE Certificate Number: BT0609130121 Issue Date: 14-Sep-2006 Issued By: Best Certificate Standard: CE Certificate Number: BT0609130407 Issue Date: 14-Sep-2006 Issued By: Best. Unit Size (Dia. x H): 300 x 63mm. Unit Packing (G.W.):3.0Kg.