Isolated relays, such as those used in the Model 7013 relay Switch Card, can be used to control certain test system requirements, such as the conveyor.

隔离继电器，例如7013行继电器开关卡中使用的继电器，可被用来控制特定的测试系统要求，例如传送带。

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The periphery output control system is composed of analog peripheral device such as LED, relay, digital switch etc, to control the other weak-current devices and general heavy-current devices.

外围输出控制系统由发光二极管、继电器、数字开关等模拟外围设备，控制其它的弱电设备和一般的强电设备。

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Because the electricity wastage is heavy, once the controlling system take places malfunctions as electricity cut, the state of the relay can't last, then the switch state will be self-changed.

电耗大，一旦控制系统发生断电等故障，继电器的状态无法维持，电器的开关状态就会自动改变。

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