Features 1、High quality two-wire 2.4-30V DC voltmeter, practical and durable. 2、Sealed plastic waterproof shell with folding design, durable and convenient. 3、High precision, reverse protection. 4、Move the decimal point automatically. 5、Adjustable voltage resistor, turning clockwise to reduce voltage, can work directly under 5V, 9V, 12V, 24V. Specification Features: High quality two-wire 2.4-30V DC voltmeter, practical and durable. Sealed plastic waterproof shell with folding design, durable and convenient. High precision, reverse protection. Move the decimal point automatically. Specification: Material: Plastic Weight: 11g/0.4oz Operating current: less than 30mA Mounting port: 23x14.5mm Measurement rate: 200ms/ time Measurement accuracy: 0.3% Package List: 1* LED Digital Voltmeter 1* Cable Package List