<b>Features:</b> <ol> <li>Voltmeter + Thermometer Auto Car Truck Bus Motorcycle Battery Voltage Temperature Monitor Digital Indicator Meter Test with Dual LED Display, DC 12v 24v</li> <li>Dual function: displays the temperature inside the car and the voltage of the car battery at the same time.</li> <li>With external sensor and flexible temperature.</li> <li> Safety: The built-in fuse is safe to use.</li> </ol> <b>Product usage suggestion:</b> <ul> <li>When using , the sensor should be bent to avoid contact with parts of the car heater that may affect the measurement (such as parts exposed to sunlight).</li> <li>Voltmeter + Thermometer Auto Car Truck Bus Motorcycle Battery Voltage Temperature Monitor Digital Indicator Test Meter with Dual LED Display, DC 12v 24v</li> <li>Dual Function: Simultaneous display of car temperature (-10C to 80C) and car battery voltage.</li> <li>Safety: Built-in fuse is safe to use. - With external and foldable temperature sensor.</li> <li>EASY TO USE: No batteries required, just plug the product into the car cigarette lighter socket.</li> <li>Blue and red dual LED display, - high brightness LED, see the display clearly.</li> < /ul> <b>Product specifications:</b> <ul> <li>Installation: insert the product plug into the cigar socket</li> <li>Power source: cigarette lighter</li> <li>Display color: red + blue</li> <li>Bright LED, clear display</li> <li>Current: less than 100mA</li> <li> Voltage available: DC12~24V</li> <li>Diameter: 4cm, Length: 7.7cm</li> <li>Weight: 26 grams</li> </ul> <b><i>Package contents: 1 x 2-in-1 car battery multimeter (voltmeter and thermometer).</i></b>