Mini Digital Voltmeter - 0V-30V - 3-Wire

With this affordable mini LCD digital voltmeter you can measure voltages from 0V to 30V with 0.01V precision. You will however have to provide a power supply (from 4V to 30V DC) which can be three or four AA batteries in series or a single 9V battery or an old DC adapter.

Specifications:

• Measuring range: 0.00V-30.0V DC
• Power supply required (not included) 4V-30V DC
• Maximum input 30.0V DC (anything higher will result in permanent voltmeter damage)
• Tolerance: ± 1%
• Input impedance> 100K Ohms
• Working current: approx 20mA
• Refresh speed: approx 300ms
• Display mode: three 0.56 inch LED digital tubes
• Display color: green
• Lead wires length: 15cm
• Dimensions 22 x 14 x 9 mm
• Includes two mounting holes

Connection instructions:

• see photo on the left
• connect your power supply (4-30V DC) to black (-) and red (+) wires
• measure your input voltage accross the white and red wires