Specifications: Weight: 21g Voltage Range: 5-15V Power Input: DC 12V-24V Portiforium Dimension: 3cm (1.18in) Product Dimension: 3.7cm x 2.9cm (1.46in x 1.146in) Protection: Reverse Connection Protection. Materail: High Temperature Resistant Nylon Flame Retardant Materials Package included: 2 x Blue Connector Cap 1 x Waterproof LED DC Digital Display Voltmeter