Product Name: Multifunctional Digital Audio & Video Conference System OLED Screen Microphone (HT-7810 series) Model NO.: HT-7810c HT-7810d Color: Black Pointing Feature: Cardioid Communication: Wired Composition: Microphone base + Gooseneck Microphone Video: Video Type: Video Conferencing System Connection Type: 8 Pin Video-Tracking: Support Voting: Support Built-in Speaker: Support Sign-in: Key Press Trademark: HTDZ Transport Package: Carton Origin: China Product Description We have over 20 years expreience in the design and manufacture of conference system equipment.* Operate a 10,000sqm factory.* We are not only selling products, we provide solutions service.* Integrating research, production, sales and service.* 6 major product series and 1,000+ models.* Support OEM & ODM service.Conference chairman microphone & delegate microphone HT-7810c HT-7810dBasic parameter:Frequency response: 40Hz-16KHzSensitivity: -44 dB±2dBReference sound receiving distance: 20~120cmDimension: 207x117x60mmLength of gooseneck:420mmSupport discuss & voting & video-tracking:-HT-6600 / HT-7000 main unit to support discuss function.-HT-7300 main unit to support discuss & voting & video-tracking function.OLED display, showing local date and time.Support time setting function, time counting up or counting down.Listening and speaking.5 keys to vote.The system power supply for all the delegate units is provided by the main unit at 24 safe voltages.With 8-PIN T-type hand-in-hand interconnection cableBuilt-in high fidelity speaker with knob to adjust the volume.Built-in 3.5mm earphone jack.Electric capacity type microphone.Extended pipe optional.The annular red indicator lamp could show the state of the microphone.The chairman unit number in the system is unrestricted, can join in any position of the system.Chairman can turn off delegate MIC by priority button,Indicative sound for chairman unit (optional)C. only mode: only chairman microphone can be turn on.System Connection Diagram (For example):1. For discuss function only2. For video tracking & voting functionsWe are looking forward to receive your inquiry if you had interest in this product, for more details please do feel free to contact us!