The digital thermometer checks the car room temperature and displays in red LED. The voltmeter checks the car battery's voltage and displays in green LED. The USB port is for charging the mobile phone, GPS, camera, MP3 or other electronic products.

Features:
3 in 1 design, to charge and to check battery's voltage and the car interior temperature.  
Over-load protection, with built-in replaceable fuse.
Fits for 12-24V vehicles.
Plug and play, just plug it into the car cigarette lighter socket.

Specifications:
Color: Black
Voltage: DC 12-24V
Thermometer Measureing Range: -10~80℃  
Voltmeter Measureing Range: 6V-30V
USB Output Voltage: DC 5V 2.1A
Display: Red and Green LED digital display
Material: ABS
Item Size: Approx. 7.8 * 4.8 * 4.8cm / 3.1 * 1.9 * 1.9in
Item Weight: Approx. 31g / 1.1oz
Package Size: Approx. 13.1 * 8.3 * 5.1cm / 5.2 * 3.3 * 2.0in
Package Weight: Approx. 44g / 1.6z

Package List:
1 * 3 in 1 USB Charger Thermometer Voltmeter Kit

Note:
To precisely measure the car interior temperature, please keep the temperature sensor away from the heating part of the car.
K4000