Mini Digital Car Voltmeter Ammeter DC 100V 10A 50A 100A LED Display Panel Amp Volt Voltage Current Meter Tester Detector

High-concerned chemical : none Communication method : Other Camera Equipped : No State of Assembly : Ready-to-Go Model Number : Mini Digital Car Voltmeter Ammeter Compatibility : others Brand Name : occkic Origin : Mainland China Certification : NONE

Product selling point: 1. Use high quality material, durable 2. With reverse connection protection, reverse connection will not burn 3. High precision, high reliability 4. Direct use does not require manual calibration 5. Wide range of applications Parameters: Power supply voltage: DC4V-30.0V Current test range: 0-10A Voltage measurement range: 0.0V-100V Display mode: double three-digit 0.28" LED digital tube Display color: red+red, red+blue. optional The product has two power supply methods: independent power supply and direct power supply. Note that no matter which power supply method is used, the working voltage can only be 4V-30V. The current measurement terminals cannot be reversed, "current detection positive pole" is connected to "load negative pole", "current detection negative pole" is connected to "test voltage negative pole", "load positive pole" is connected to "test voltage positive pole". The so-called positive and negative poles of the load mean that the current inflow end is the positive pole of the load, and the outflow end is the negative pole of the load. Common problems and solutions: (1) The current display is inaccurate If it is a direct power supply or an independent power supply and the power supply of the equipment are common ground, just disconnect the thin black wire to be accurate.

(2) No display when connected to the power supply All rectified AC power must be filtered by an electrolytic capacitor above 1000uF before it can supply power to the meter. The package includes: Voltage ammeter*1

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