| 摘要 |
The indicating light includes a moulded plastic case housing a rectangular personal computer (16) presenting three connection points (17,18,19). An light emitting diode (20) is connected to two conducting blades (21,22) linked to two of the connection points. The back (7) surface of the box can be attached to a rail support. Two terminals (8,10) are provided for electrical connections which are secured by screws (9,11).
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