DC 9-24V 4 Digital 0.56 inch LED Red Tachometer 30-80000 RPM Speed Meter 1-9999 Counter +Hall Proximity Switch Sensor NPN

DC 9-24V 4 Digital 0.56 inch LED Red Tachometer 30-80000 RPM Speed Meter 1-9999 Counter +Hall Proximity Switch Sensor NPN

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