uhf 850mhz conference mic system

{"cid":"91223906","title":"HUAIN ODM OEM Wifi UHF Wireless Conference System for Meeting Room with Mic and Host","imgUrl":"https:\/\/img.chinax.com\/nimg\/e6\/f4\/e87dd1700aa56d851d1472460576-200x200-1.jpg","attrs":{"Brand Name":"HUAIN","Model Number":"HY-U5810C\/DA1","Type":"Audio Conference System, Network Conference System, Video Conference System, uhf wireless conference system","Function":"wireless microphone for conference","Simultaneous Interpretation":"NO","Place of Origin":"Guangdong, China","Frequency range":"470-806MHz","Modulation mode":"FM","Adjustable range":"200MHz","Number of channels":"60","Channel spacing":"250KHz","Frequency stability":"\u00b1 Within 0.005%","Dynamic range":">105dB","Maximum frequency offset":"\u00b1 45KHz","Frequency response":"50Hz-20KHz"}}

{"cid":"91222405","title":"90dB Wireless Conference Room Mic Dual Channel UHF For Audio System","imgUrl":"https:\/\/img.chinax.com\/nimg\/9d\/53\/fd87d2d0d66c786cd3bf188b97ad-200x200-1.jpg","attrs":{"Price":"$110.00\/sets 1-9 sets","Brand Name":"NWS","Model Number":"NWS-1100\/CX002","Place of Origin":"China","Packaging Details":"polyurethane foam and carton, 1set\/carton(625mm*480mm*140mm)","Type":"Audio Conference System, Conference System","Function":"for audio conference system","Simultaneous Interpretation":"NO","Modulation method":"FM","Pilot frequency":"30K","Maximum number of channels":"200 channels","Dynamic range":"> 90db","size":"48*18*4.5CM","Radio frequency carrier range":"610 ~670MHZ","RF sensitivity":"<-99dbm","Mirror suppression":"> 80db","Display mode":"LCD screen","Net weight":"1.4KG"}}