OBT-2288C Top Quality Meeting Chairman Microphone Infrared Condenser Microphone Conference System   Meeting Chairman   microphone Infrared of OBT-2288C Technical indicators of microphones in attendance unit Power supply: DC 3.7V -- 4.5V Power consumption: standby ≤ 360mW, speech ≤ 630mW Working temperature -10℃ -- 40℃ Rod length: 400mm Dimensions (W×H×D) : 170mm×5.8mm (excluding the microphone) ×120mm Weight: 0.6kg Audio channel Communication mode: UHF wireless mode (one-way) Number of channels: 5 (1 chairman cell channel, 4 for cell channel) Frequency range :(frequency range is available in 500MHz -- 950MHz range) Modulation mode: FM Maximum modulation: 60K Radiation power: ≦+9dBm Frequency deviation: <0.002 Reference speech distance: 10cm--30cm The control channel Communication mode: wireless mode (two-way) Number of channels: 16 Frequency range: 422.4MHz -- 438.4MHz Modulation mode: FSK Receiving sensitivity: -100dbm Radiation power: ≦+6dBm Frequency deviation: <0.002   Shenzhen OBTPA Technology Co., Ltd(www.obtsys.com) is a company which integrates research & development, manufacture and sales. It stands out of the high-tech industry realm of public address system among other competitors. Our company has been always adhering to the business philosophy of continuous innovation and creating value from customers since 1999 when the company established, hence a various of products has been successfully used in the big famous events such as the Olympic Games, World Expo, Asian Games, etc. these achievements make us gain a various of patents and establish a good brand image in the industry. All products have assed CE, FCC certificates, and the “OBT” brand trademark has been registered in the European Union, the United States and Japan. Our company has always focused on the innovative development of audio and video applications. Its products cover analog PA system, digital PA system, SIP video PA system, POE network audio speaker, professional audio speaker, paperless conferences, video conferences and other products, after more than 20 years of development, we have independent research and development, production and application design capabilities, can well solve the compatibility, reliability and advanced issues of communication, emergency, command and other issues. Products are widely used in the safe cities, smart parks, smart campuses, smart hospitals, and smart stations and other fields, successfully established a good brand image—OBT. We are committed to developing into a world-class video integration PA system manufacturer.