LIRRD AC LED Digital Voltage Meter LDP3-AV measures an unknown input voltage by converting the voltage to a digital value and then displays the voltage in numeric form . DVMs are usually designed around a special type of analog-to-digital converter called an integrating converter. Specifications: Model NO.: LDP3-AV Customized: Customized Origin: China Display: Digital Dimension: 96mm*48mm Transport Package: Carton Package Includes: 1 x LIRRD AC LED Digital Voltage Meter LDP3-AV