audience voting system

{"cid":"91201602","title":"Classroom Electronic Audience Responses Voting System 8P-DIN","imgUrl":"https:\/\/img.chinax.com\/nimg\/f3\/8f\/acdb708f721fcb4c73a459e4343c-200x200-1.jpg","attrs":{"Price":"Negotiate","Brand Name":"GESTTON","Model Number":"GUS-8700","Minimum Order Quantity":"10","Delivery Time":"10-30 days","Certification":"CE ROHS FCC","Place of Origin":"Guangdong, China","Payment Terms":"T\/T, Western Union","Supply Ability":"10000 pics\/month","Packaging Details":"Carton Box","Number of Channels":"15 channels","Power Consume":"1.5W","Capacity":"250 voters","PC Port":"RS232","Working Distance":"150m","RF Power":"10MW"}}

{"cid":"91223906","title":"International Portable Conference Embedded Electoral Vote Counting Audience Response Voting System Clicker","imgUrl":"https:\/\/img.chinax.com\/nimg\/bf\/5d\/6e6f38fa30197a8c6505a5eb2d16-200x200-1.jpg","attrs":{"Brand Name":"HUIAN","Model Number":"HY-651A1","Type":"Audio Conference System, Network Conference System, Video Conference System, Flush-Mount Mic Voting Unit","Function":"Voting, vote","Simultaneous Interpretation":"NO","Place of Origin":"Guangdong, China","Transmit power":"10mw","Communication distance":"100M","Addressing mode":"ID code","Voting function":"Touch Control Button key voting","Application":"Conference Systems","Countdown time":"Settable","Interface":"RJ45\/8PIN","Dimension(W*H*D)":"16*3.5*12.8cm"}}