... Wireless Voting SystemsAbout CertificatesWe have got CE,RoHs,FCC certificatesOther products:We have IR and RF two technology ... attendance checking,text message sending, etc.About UsEnjoy Technology Co.,Ltd is an original manufacturer since 2001. We ... team.ENJOY Wireless Voting System also called Audience Response System, Personal Response Systems or Clickers. RF technology Wireless Voting Systems