Product description: Very wide input range.
To reach the best measurement accuracy,this voltmeter will automatically move the decimal point's position according to the different measuring voltage
Measuring Range :DC4.5-30V, DC4.5-120V,AC30-500V(optional)
installation size:46x27mm
wire length:20cm
Allowable error :1%
Display mode :Three 0.56 inchLED digital tube
Display color :Red Green Blue (optional)
Refresh rate:about 200mS/time
Power supply:not need
Current consumption:less than 20mA, generally 5-15mA