Features: 3 in 1 function: digital thermometer, car battery monitor, car-mounted charger. With 1 USB port, support Max 5V/2.1A output. LED display to show the voltage and temperature. ABS material, durable, not deformed. Digital thermometer suitable for 12V and 24V battery measuring range: -9 to 80 Celsius Simply plug into cigarette socket, instant confirmation of battery voltage, low power consumption high light display.
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