Description : Measuring range: 0.00V-30.0V Power supply range : DC4.50-30.0V, Highest input : DC30.0V. Note: Input voltage higher than 30V may cause permanent damage! Allowable error : 1%; error greater than or equal to 10V is 0.3V; error less than 10V when less than 10V input resistance #34;: gt; 100K Europe Working current : Red lt;23mA Refresh speed : About 300mS once Display method : Three 0.56 #34;LED digital tube Display color : red Lead length : 20cm Dimensions : 48 x 29 x 22 mm, length X width X thickness; Mounting holes : 46 x 27 mm net weight : 19g Gross weight : 26g Operating temperature : -10 ~ 65