aFe Power 8pcs DC Voltage Display Mini Digital Voltmeter 0.28" 2.5-30V Multi-Color LED Tester

Eight-piece voltmeter set for DIY electrical work

This pack contains eight mini digital voltmeters designed for DC voltage monitoring in automotive and hobby projects. Each unit uses a two-wire connection with reverse-polarity protection and fits a 23 x 10.5mm panel cut-out. The displays suit makers, installers and technicians who need multiple readouts across a build.

Colour-coded ranges cover 2.5 V to 30 V

Red modules measure from 2.5 V, yellow and green from 2.6 V, and blue from 3.2 V, all up to a 30 V maximum. Below 10 V the readout resolves to 0.01 V; above 10 V it resolves to 0.1 V with a stated permissible error of 1 %. Inputs above 30 V risk permanent damage to the meter.

Low current draw and wide operating temperature

Each meter consumes less than 20 mA, typically between 5 mA and 15 mA, and refreshes roughly every 200 ms. The 0.28-inch three-digit LED tube operates from -10 °C to +65 °C, so the units remain readable in engine bays or outdoor enclosures without active cooling.