3 in 1 DC5-50V Car High-precision Electronic LED Luminous Clock + Thermometer + Voltmeter Feature 1. The appearance is small and exquisite, does not block the line of sight. 2. It can be directly drilled, snap-fitted, or placed directly. 3. Made of ABS, durable. 4. A certain item can be displayed individually, or each item can be displayed alternately, and supports customizing the items to be displayed. 5. With brightness adjustment function, 3 levels of brightness can be adjusted. And there is an automatic brightness function, which can be darkened at night and brightened during the day. Specifications 1. Working voltage: DC 5.0~50V 2. Voltage display range: 5.0~50 V (error +-0.1V) 3. Power lead length: 28cm 4. Time display chip: RX8025T 5. Temperature measurement range: -35~120 degrees 6. Weight: about 30g 7. Frame size: 22x58mm 8. Installation opening size: 19.5x56mm