As for electronic components, there are usually several problems
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Voltage
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1. AC, and DC 2.12v 24V 110V 220V 380V
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Current:
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Ma 1.30ma 2.50ma 3.100ma
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Power algorithm:
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power (W) = current (a) × voltage (V)
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Output mode:
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1. Relay output 2. Transistor output
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Action mode:
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no and NC
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Working principle:
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1. NPN output low level, 2. PNP output high level
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