LED Digital Display Panel Two-wire Digital Voltmeter Car Motor Reverse Connection Protection High Precision_x000D_ _x000D_ Features:_x000D_ 1. 3 colors: 3 colors have different working current and input range, direct current 4.50-30.0V(red)/direct current4.70-30.0V(green)/direct current 5.00-30.0V(blue)._x000D_ 2. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away._x000D_ 3. Durable material: this product is made of good quality plastic material, durable and long service life._x000D_ 4. Purpose: shooting for household sockets, fuses, car batteries, charging systems, and car circuit failures._x000D_ 5. Fine workmanship: with fine and great workmanship, it is durable and has long service life._x000D_ _x000D_ Description:_x000D_ Low starting voltage, red as low as 4.5V, green as low as 4.7V, blue as low as 5.0V. With reverse connection protection, no burning if connected reversely._x000D_ _x000D_ Specifications:_x000D_ Color: black_x000D_ Size: 48 * 29 * 22mm_x000D_ Lead length: 20cm_x000D_ Opening size: 46mm * 27mm_x000D_ Working temperature:-20 C ~ 65 C_x000D_ Input impedance: > 100K_x000D_ Display: 3 * 0.56 inch digital tube_x000D_ Measurement accuracy: 1%_x000D_ Refresh rate: 300ms / times_x000D_ Working Current: red< 23mA, green< 18mA, blue< 13mA_x000D_ Optional Display Color: Blue/Green/Red(optional_x000D_ Measuring range: red direct current 4.50-30.0V, green direct current 4.70-30.0V, blue direct current 5.00-30.0V(optional_x000D_ _x000D_ Package Included:_x000D_ 1* Voltmeter_x000D_ _x000D_ Notes:_x000D_ 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures._x000D_ 2. Please allow slight dimension difference due to different manual measurement. _x000D_