Working voltage: DC 5.0~27V Frame size: 22x58 mm Installation opening size: 19.5x56 mm Temperature display range: -35 ~ 120°C (±1°C error) Voltage display range: 5.0~28V (±0.1V error) Power lead length: 28cm Integrates time, internal and external temperature, and voltage into one display. Individual items can be shown separately or cycled automatically. Display content is customizable. Features a precision real-time clock chip for accurate timekeeping. Includes two temperature probes: one 0.3m and one 1.5m, both waterproof, with a measurement range of -35°C to 120°C. Adjustable brightness with three levels and an automatic brightness adjustment mode that dims at night and brightens during the day. Condition: 100% New Material: ABS Color: Black Display screen color: Green Package Contents: 1 x Car Clock Note: Light reflection and differences in display devices may cause slight variations in the color of the item shown. Measurement error allowed within ±1-3cm.