Produino STM8S003F3 0.28" 3-Digit LED Digital Voltmeter - Black + White + Blue(3.5-30V )
Technical parameters: Measuring range: DC 0~100V; Minimum input: DC 3.5V ; Maximum input: DC 30V (This voltage is higher than the risk of burnt); Tolerance: 1% (+/-1 words); Display: 0.28" LED 3-digital tube; Display color: red; Power supply: DC3.5-30V;Working temperature: -10'C~65'C