Wooden Extension RED Display AC 70-500V 0.56" Voltmeter PACK of 5 Five Voltmeter  (Digital)

1. Measuring range: AC70V-500V 2. Power supply range No additional power supply needed, direct use of the measured voltage as a power supply, range: AC70V-500V 3. Maximum input AC500V. Note: Input voltage higher than 500V may be permanently damaged! 4. Allowable error: ± 1%; 5. Input impedance> 1M ohms Refresh speed: About 300mS / time 7. Display mode Three-digit " 0.56 " LED digital tube 8. Display the color: RED 9. Lead length: about: 20 cm / 7.87 in 10. Outside dimensions: about: 4.8 x 2.9 x 2.2 cm / 1.89 x 1.17 x 0.87 in Hole Size: about 4.6 x 2.7 cm / 1.81 x 1.06 in 11. Net weight: about 18g 12. Operating temperature: -20 ° C to 65 ° C