Now ko lang na-picture-an sa car. 3-in-1 Car Voltmeter, Thermometer, USB Charger. Ka-start lang ng ACU kaya 29C pa ang naka-display na temperature. With engine ON, battery voltage displays 14.0V to 14.2V which is normal. With engine off and IGN on, I get a reading of 12.0V to 12.2V which is also normal. Good to have for monitoring your car alternator and battery health.