Waterproof round LED digital voltmeter ensures accurate DC4-100V voltages , for outdoor durability and reliabled in wet conditions The construction and wide voltages detection ranging make this meter a must having for realtime battery and electrical Featuring circular design and tool less installation , this housed voltages meter integrates seamlessly into panel while clear LED numerical readings Perfectly suited for marine equipment , outdoor power systems , and automotive applications exposedly to rain , or splashing water Ideal for DIYer enthusiasts , marine technicians , and motorcycle maintenance professional requiring precise electrical systems diagnostics, Manufacturer: BULAIDAI