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Feature:1. The wiring of this voltmeter is simple. The conventional two wires are used, the red is connected to the positive, the black is connected to the negative, and the reverse connection is ...
Feature:1. The wiring of this voltmeter is simple. The conventional two wires are used, the red is connected to the positive, the black is connected to the negative, and the reverse connection is ...
Feature:Independent crystal oscillator, more accurate timing1. Convenient direct output wiring2. Add buzzer and audible alarm3. Add p1ause button to stop urgently5. Start and stop setting mode, ...
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