Description:1. 100% Brand New and High Quality2. Type : 0.36 two-wire DC voltmeter3. Material: Plastic4. Size: 3.5 x 1.5 x 1cm5. Color: Black6. Display color: Red / Green / Blue (optional)7. Two-wire Measurement range: DC 4.5~32V8. Working Current:< 23mA9. Working Temperature: -10C-65C10. Minimum input voltage: DC 4.5V (Lower than 4.5V, the brightness will be weakened, but this will not affect the accuracy of measurement)11. Maxmum input voltage: DC 30V (Higher than this voltage is has a risk of overburning)12. Permissible error: 1% (1 digit)13. Display mode: three digit 0.36''LED digital tube14. Display Size: 21.5 x 13 x 8mm (L*W*H)15. Speed ratio: about 200ms/time16. Lead wire length: 15cm17. precision automatic adjustment ,when less than 10V accurate to 0.01V, more than 10V accurate to 0.1V18. And it is self-powered version, Two wire connection, with reverse polarity protection19. No power supply needed Package Includes:1x Digital Voltmeter