Mini digital volt-amp meter for DC systems, model Voltmeter Ammeter, with a digital-only display and DC power supply. Compact dimensions about 1.89 in × 1.14 in × 1.02 in (48 mm × 29 mm × 26 mm) and a wide operating range from -10 °C to 65 °C (14 °F to 149 °F). Designed for electrical DIY use; brand: diymore.