| 摘要 |
A discriminator which comprises two or more switches (3) capable of operation by individuals or members of a team, each of the switches (3) being connected to an interface (17) which, on receiving a signal from one of the switches (3) disables the remainder. The interface (17) is also connected to visible and/or audible devices corresponding to each of the switches, for example a flashing light (6) and/or buzzer (4) correspoonding to each of the switches whereby the particular switch actuated first results in the corresponding warning device being actuated. |
