Welcome to my store，Please read the following terms carefully.Feature:100% brand new and high qualityUsed to monitor the storage-battery voltage， with reverse connection protection function， line will not burn.Specifications:Quantity: 1Voltmeter SocketInput voltage:12V-24VMeasure voltage: 6 ~ 33VLights color: redSize: 3.5 x 2.7cm(L x D)Net weight:13gPackage weight: 23gPackage Content:1 x Voltmeter SocketMy store，make better choice for you!