12V-24V DC LED Digital Voltmeter Ammeter, Waterproof Round Volt Amp Meter, Car Battery Voltage Meter Tester, Automotive Replacement Battery Gauge Monitor for Marine Boat Motorcycle Truck RV (Red) - Auto&Ship, AS-910-Volt-Amp-Meter

• 【2-in-1 Voltmeter & Ammeter】LED digital display with 2-in-1 voltage / amperage measurement. Measures battery voltage up to 30V, and your load amperage draw up to 10A. 【New Design】Compact circular design makes this gauge ideal for dashboard and through-panel installation. Simply mount into 1-1/8" round hole and connect battery and ground. Wire (+) and (-) pins to the battery, with the middle pin going to the negative side of your load. 【Easy-to-install】Monitor your 12v battery voltage and load current with an easy-to-install, 2-in-1 digital voltmeter / ammeter. Simply mount into a 1-1/8" hole, tighten the plastic nut, and connect your power source, ground, and electrical load. Comes with insulated crimp terminals. 【Meet Different Needs】12V round volt amp meter can be mounted on the panel, can be installed separately on the 29mm diameter mounting hole, or can be fixed on the matching panel to meet your different installation needs. 【Popular Uses】Marine voltmeter ammeter adopts a waterproof design, so this LED voltmeter is safe to use even in wet environments. In addition, the mini voltmeter is suitable for 12V 24V cars, cars, motorcycles, RVs, SUVs, off-road vehicles, ATVs, boats, ships, trucks, tractors, etc.