Features:
Digital clock, car voltage display at real time.
Indoor and outdoor temperature display, measuring range: indoor (-50-70) ; outdoor (-50-70)
Icing alarm display will turn on as temperature lower -1-4
12/24 hour format display, year / month / date display
Inspect and display real time automobile storage battery voltage
Orange and blue backlight is shiftable
Excessive or lower voltage alert function
Car cigarette power lead (12/24V)

Specifications:
Shell color: Black
LCD display: 95mm (L) * 15mm (W)
Product size: About 110mm * 23mm * 29mm

Operation:
1. Connect plug to car cigarette socket, put temperature sensor outside and fix it at car door for edge, then run the car, product will display indoor temperature (icon show IN) and car battery voltage.
2. Press IN/OUT to shift to outdoor temperature display.
3. When temperature outside is lower than -1-4 ,ICE icon will display.
4. The number at right side is car battery voltage.
5. Press the side button to shift blue and orange color backlight.
6. If any abnormal display, please take out the battery for a while and reload it again.