ดิจิตอลโวลต์มิเตอร์ วัดแรงเคลื่อนไฟฟ้า110 โวลต์ - 220 โวลต์ - 380 โวลต์ ac 70 โวลต์ เป็น 500 โวลต์ ขนาด 0.56 นิ้ว มีไฟ led สีแดง สีฟ้า สีเขียว Digital Voltmeter AC 70V to 500V 0.56 inch Voltage tester

110V 220V 380V Digital Voltmeter AC 70V to 500V 0.56 inch LED Digital Panel Meter Voltage tester RED/GREEN/BLUE monitor Description: 1. Operating voltage: no need to connect to any power supply, two-wire system 2. The two-wire voltage meter design, the wiring is simple, easy to install 3. When there is a slight error, you can calibrate it through the circuit board, "fine-tuning" potentiometer for calibration Specifications: 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: Green/Blue/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 This voltmeter's measuring range is AC70-500V It can be used in measuring AC110V 220V 380V. This voltmeter only need to connect two wires,the connection is simple, low price but has reliable performance. It uses 0.56inch LED digital tube, the displaying is sharp and vibrant. Precautions： There is high-voltage on PCB on this voltmeter's back, it is dangerous to touch PCB and components. So we suggest that electronic enthusiasts and ordinary consumers don't use this, please be careful when purchasing. This voltmeter use capacitance to reach voltage step-down, it can't used in inverter, Electronic speed governing, silicon controlled voltage adjusting dimming, UPS and other occasion with radio-frequency component and non-sinusoidal wave, or it will be bumt and doesn't work normally. This voltmeter didn't do moisture-proof, waterproof, shockproof, anti-oil processing, please be careful or handle by yourselt when using. Before purchase: 1. All the goods are in stock and we will dispatch immediately if we receive the order. 2.Please read the item description, if you have any question, do not hesitate to contact us. 3.Use the vouchers for more saving. Shipment： 1.1-2 days to ship(except for the pro-order item) After purchase: 1.If you are satisfied，please give us 5 stars praise. 2.Please contact us before you are going to give us bad review. We are helpful and will solve the problems. if you receive a defect item,please contact us at once with item picture or video #110V #220V #380V #Digital #Voltmeter #AC #70V #to #500V #0.56 #inch #LED #Digital #Panel #Meter #Voltage #tester #RED #GREEN #BLUE #monitor