WATERWICH 12V 24V Volt Meter LED Digital Display DC Voltmeter Voltage Meter with Terminals for Car Automobiles Motorcycle Truck Boat Marine (12V-24V Blue Voltmeter) 2-in-1 current voltage meter, real time monitoring battery of vehicles, remind you of charge or replacement in time, better avoid emergent dead battery at starting car engine! High temperature resistant,Made of Eco-friendly flame retardant durable ABS plastic and good conductivity pins with black matte surface treatment, wear and tear resistant for long lasting durability,CE Certification.NOT WATERPROOF Manual:This is the only 2-in-1 current voltage meter that didn't come with Installation Notes,but We show the wiring diagram in the product picture.And is very easy to Install.Require external power supply; with reversed connection protection Panel Flush Mount and Easy to Install, drill size of 1.15" diameter, ,Comes with 3 terminals.with Twist Lock fastener for stable mounting, Fits to almost all panel locations you desired! Note: 10A below ammeter (include 10A), built-in shunt, does not require external shunt Over-current,Over-volt and Short Circuit Protection, well protects the whole circuit, fits for most 12-24V Boat Marine Vehicle Motorcycle Truck ATV UTV Car Camper LED Round Panel Specifications: Voltage measuring range: DC10V-28V Ammeter measuring range: DC 0.1A-10A Display color : Red / Blue/ Green Operating temperature: -40 to 85? Features: Display the AC voltage and current simultaneously by LED digital tube. With reversed-connection protection to avoid burning when connected reversely.but the max power supply can not exceed DC 28V . Timely grasp the state of battery voltage, voltage measurement purposes can also be used for other products shows you the voltage readings and helps you to better monitor car voltage condition. Say Goodbye to Exhausted Battery Before Each Drive! Built in over current, over voltage and short circuit protection, CE Certification,High temperature resistant,it well protects the whole circuit. While made of eco-friendly and flame retardant ABS plastic shell and good conductivity connecting pins, it is super sturdy and lasts for a long long time. Panel Flush Mount and Easy to Install, drill size of 1.15" diameter, ,Comes with 3 terminals.with Twist Lock fastener for stable mounting, Fits to almost all panel locations you desired! Fits for most 12-24V Boat Marine Vehicle Motorcycle Truck ATV UTV Car Camper LED Round Panel Notice: 10A below ammeter (include 10A), built-in shunt, does not require external shunt Shipping We offer FREE shipping on all orders within the Continental USA! We ship within Three business days of payment, usually sooner. We use a selection of shipping services such as UPS, FedEx, USPS etc. We ship WORLDWIDE, APO/FPO addresses or PO Boxes allowed IN SOME LOCATIONS. We ship to some of US protectorates free, not all. Pls check with us or we invoice your shipping. Local pickups and combined shipping options are not provided at this time. Return You can return a product for up to 30 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. Payment We accept payment by any of the following methods: PayPal, direct payments, credit cards. Please pay as soon as possible after winning an sale, as that will allow us to post your item to you sooner! Feedback Customer satisfaction is very important to us. If you have any problem with your order, please contact us and we will do our best to make you satisfied. Contact Us If you have any queries, please contact us via. We usually respond within 24 hours on weekdays. Please visit our store to check out other items for sale! Thank you for shopping at our store.