KEEDOX® Mini Blue 0.36 " LED Digital Volt Voltage Panel Meter Voltmeter 0-99V, Three-wires for DIY
Notice: Buy more, get more discount!! Besides, This voltmeter module is for DIY, we do not have a user manual, buyer should use it by himself.Feature:Dimension: 23x20x11mm (without mounting ears)Power Supply: DC 4.5-30VOperating temperature: -10c~ 65cWiring:Red: Working Power Supply Positive +Black: Common Negative -Yellow: Measure Voltage Postive +Power cannot be reversed, otherwise it will burned the modulePackage Includes:1x Digital Voltmeter