Features: Large-scale electronic screen, the number is bright and easy to see, and it is still clear during the day. 3-in-1: setting time, indoor and outdoor temperature, showing voltage as one. You can view an item individually, or alternatively view each item in a loop, and support customization of items to be displayed. Colored light back: There are 3 different types of light color, including red, green and blue. You can choose a color like your back light. You can choose snap-on mounting hole or just put it in the right place. Specifications: Product name: 3 in 1 voltmeter Material:PP Color: red, green, blue Voltage: DC 5-27V Frame size:about 22x58 mm Mounting opening size:about 19.5x56 mm Temperature display range: -35-120 C Voltage display range: 5-28 V Power lead length: about 28cm Package included: 1pc x voltmeter Note: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.