Ultra-small size(40×25×25mm), 2-wire simple connection, handy and easy to use.
Wide voltage measuring range: DC3-30V; Max voltage input: DC30V.
Simply connect the red and black wire to positive and negative pole of measured voltage respectively.
Reversed connection protection prevents the meter from being burn when wires are connected reversely.
Voltmeter with epoxy potting, Waterproof, Oil Pollution Prevention, Moistureproof, Shockproof, Dust-proof (please do not merge the meter in water).