Voltmetro digitale verde LED 5 cifre DC 0-4.3000-33.000V misuratore di tensione pannello auto K

Variable precision:Precision automatic change below 4.3 V, the highest resolution of 0.1 mV, Precision automatic 4.3 V above changes, the highest resolution of 1 mVConnection is simple, just need to pick up two lines, a joint reverse protection, then do not burn.

eBay