Product Name: Conference Microphone System with Built-in Loudspeaker Model NO.: TL-V3300 Color: Black Pointing Feature: Omni-Directional Communication: Wired Composition: Loudspeaker Video: Video Type: Conference System Automatic Camera Control: Supported Loudspeaker: Built-in Mounting: Portable or Fixed Tabletop Trademark: GonSIN Transport Package: Carton Specification: High-End Origin: China Product Description GonSIN TL-V3300 digital conference system offers a multi-functional conferencing solution that combines microphone discussion, chairman priority, built-in loudspeaker, headphone listening, attendance registration, camera tracking, digital recording and software control.The basic system on one central control unit supports up to 60 delegate units and can be expanded to 1000 delegate units with additional extension units.Main features:Easy to set up and simple to operateDual-shielded cable for interference resistanceMultiple selectable microphone modesSuerior high fidelity audio qualitySystem can function with or without PC/software controlAutomatic camera control is supportedTL-VD3300 Delegate UnitPush button switch for MIC ON/OFFUnidirectional electret condenser microphoneRed ring luminant to identify live unitBuilt-in loudspeaker in hi-fi qualityDual 3.5mm headphone jacks with level controlLoudspeaker is muted when MIC ON and/or headphone connectedSupports automatic video camera trackingFrequency response: 50~18kHzS/N ratio at 1mV input level: -95dBSensibility: -46+(-)4dBPower input: 24VDCMicrophone stem length: 41cmDual-shielded captive cable length: 50 cmPortable or fixed tabletop mountingTL-VX3300 Chairman UnitPush button for MIC ON/OFFPriority button to override all active delegate unitsUnidirectional electret condenser microphoneRed ring luminant to identify live unitBuilt-in loudspeaker in hi-fi qualityDual 3.5mm headphone jacks with level controlLoudspeaker is muted when MIC ON and/or headphone connectedSupports automatic video camera trackingFrequency response: 50~18kHzSensibility: -46+(-)4dBPower input: 24VDCMicrophone stem length: 41cmDual-shielded captive cable length: 50 cmPortable or fixed tabletop mountingTL-Z3 Central Control Unit- Provides DC power to all contribution units- Master, treble, bass volume level control- 3 microphone modes can be selected on the front panel- Simultaneous active delegate units can be preset from 1-4- Connects contribution units in up to 4 lines- DIN connector for additional extension unit- Can be controlled via PC/software if required- dB25 port for interpreters unit- dB25 port for IR language distribution system- RS 232 port for computer control- RS 485 port for dome camera control- Built-in automatic video matrix switcher- 4 x video input sockets & 2 x video output sockets- RCA audio outputs for external equipment- AC power requirement: 110V/240V, 50-60Hz- Power capacity: 300W- Frequency response: 20Hz-18kHz- S/N ratio at 1mV input level: -95dB- Distortion at 1kHz: < 0.3%- Operating temperature: -20 to 50 Centigrade- Dimensions: 423x90x320mm (WxHxD).