WAGO 857-304 24VDC 6A SPDT-CO DIN Rail Mountable Relay Module

LED - Light Emitting Diode - a small light source

Yellow - A primary colour. The sun is often described as yellow

LED - Light Emitting Diode. A bulb that is very efficient at producing light. Often small.

Cage - an object that is used to contain something, often animals.

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