它由8个发射器和1个接收器组成，可用于8组或8组以下的智力竞赛中。比赛前，将参赛组从0至7编号，每组发给对应的一个发射器。将接收器放于各组中央或前方。主持人按一下启动键后，抢答开始。此后，哪一组最先按下发射器上的抢答键，接收器就立即显示该组的组号并锁定，同时发出3次清脆的“叮咚”声。-It consists of of eight transmitter and a receiver, can be used for 8 or 8 group quiz. Before the game, the competition group numbered from 0-7, each issued to correspond to a transmitter. Put the receiver in the central or in front. Moderator click on the start button, the answer in the beginning. Since then, which group will be the first to press the answer key on the transmitter, the receiver immediately display the group number and lock, also issued three times a crisp " ding-dong"　sound.