流量指示器用于声音报警，灯光报警，当流量发生时启动电机、泵等继电器或起动器开关。
Waterflow indicator used to sound alarm, light signal, actuate relays or starter switches for motors, pumps, etc., when low occurs.
用继电器操作的一种可视信号或音响信号装置，用以指示有关电路的情况。
A visual or audible signaling device, operated by relays, which indicates conditions of associated circuits.
明亮的LED指示灯显示继电器状态和信号强度。
Bright LED indicators show relay status and signal strength.
本实用新型属于一种控制焊机启闭的焊把式控制器，其主要由变压器、接触器、继电器、开关指示电路所组成。
The utility model belongs to a welding holder type controller used for controlling the on-off of a welder, mainly comprising a transformer, a contactor, a relay and a switch indicator circuit.
此外，作为改型件，还可提供各种指示灯，避雷器，相位保护器和安全火花继电器。
In addition, various pilot lights, lightning arrestors, phase protectors and intrinsically safe relays are available as modifications.
用于继电器箱与多个警报指示柱，警报指示器板间的连接。
Apply to relay Box for alarm indicator connecting between several alarm indicator column and alarm indicator board.
用于继电器箱与多个警报指示柱，警报指示器板间的连接。
Apply to relay Box for alarm indicator connecting between several alarm indicator column and alarm indicator boa...
用于继电器箱与多个警报指示柱，警报指示器板间的连接。
Apply to relay Box for alarm indicator connecting between several alarm indicator column and alarm indicator boa...
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