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Review on LUBAN Industrial Warning Workshop Indicator by Johnny Chambers

Revainrating 4 out of 5

Gray is GND in signal lights

Didn't check the buzzer, 90dB is pretty loud. The connection diagram is a bit unclear, so I add: the gray wire is GND, the orange is the buzzer, the rest of the colors match.

Pros
  • Nice to use
Cons
  • old