Car 3in1 Digital LCD Clock Thermometer Battery Voltage Monitor

Car 3in1 Digital LCD Clock Thermometer Battery Voltage MonitorFeatures: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 -1-412/24 hour format display; year / month / date displayInspect and display real time automobile storage battery voltageOrange and blue backlight is shiftableExcessive or lower voltage alert functionCar cigarette power lead (12/24V)Specifications:Shell color: BlackLCD display: 95mm (L) * 15mm (W)Product size: About 110mm * 23mm * 29mmOperation: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.Package Content:1 x Digital Car Voltage Meter1 x Car Cigarette Socket1 x User Manual Instruction