Geekcreit® DC 100V 10A 0.28 Inch Mini Digital Voltmeter Ammeter 4 Bit 5 Wires Voltage Current Meter with LED Dual Display

Why can't I write a review and add pictures to the review? I bought 3 meters on October 31 but when I click submit I get the message that I can't write a review for products bought over 6 months ago but it's just over a month ago when I bought this. I already tried to logout and login again but it makes no difference, the same happens when I try to write a review on my mobile.

hi, which is the value of the shunt resistor of the amperimeter?

for the battery of a car will be useful?.

Thin red line: power Red line(thick): IN, current input Yellow line(thick): PW, positive terminal input voltage measurement Thick black line: COM, common size but there are two connectors, one with three fine yellow black red lines, the other with two thick lines one red and black??

What is the minimum current these meters can display - 0.001A?

I bought 3 units and each one suffers the same problem: the voltage displays just fine but the current flashes up a reading (correct) for about a second after powering up then the display goes back to zero. Have I got some broken modules do you think?

can it measure current under 100ma?

please send me a schematico diagram about connection. thx

Does it have DOA Product Guarantee?

posso ligar ele na corrente alternada 127v