0V-30V 3 Wire DC Voltmeter Terminal 0.56 Inch LED Digital Voltmeter Accessories Reverse Connection Protection, Color: Red

1. With reverse protection, reverse not burned2. Low cost, high precision to meet most of the application requirements3. Low startup voltage, red as low as 4.5V, green as low as 5V, blue as low as 5V4. Input voltage up to DC30V, ( note: input voltage higher than 30V may be permanently damaged )Technical parameters:1. Measuring range: 0V-30V2. Input impedance: greater than 100K ohms3. Refresh speed: about 300ms/time4. Operating temperature: -10-65 degrees Celsius5. Power supply range: red DC4.5-30V, green DC4.7-30V, blue DC5-30V6. Allowable error: about 1 percent, greater than or equal to 10V error of about 0.3V, less than 10V error of about 0.1V7. Operating current: red less than 23mA, green less than 18mA, blue less than 13mA8. Display mode: three 0.56-inch LED digital tube9. Display color: red, green, blue10. Length of lead wire: 20 cm11. Weight: about 19 g12. Size: about 4.8 x 2.9 x 2.2 cm, mounting holes about 4.6 x 2.7 cm