signal selector relay
... signal selector relay 信号选择继电器 signal control relay 信号控制继电器 signal lamp relay 信号灯电驿器 ...
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示范90低压91高压模型选择继电器的设计选择较低或两个信号的压力较高，以提供持续的输出压力的控制装置。
The Model 90 low pressure and Model 91 high pressure Selector Relays are designed to select the lower or higher of two signal pressures to provide a continuous output pressure to a control device.
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