Narva 81138BL 12/24V DC LED Volt And Amp Meter

12/24V DC L.E.D Volt and Amp Meter. Ideal for powering electronic items with USB plugs from a vehicle’s accessory socket. Features fuseprotection and L.E.D power indicator. Suitable for use with 12V or 24V vehicles and power supplies.Output 5V, 2.5A