RV DC Volt Meter, DROK DC 12V 24V Voltmeter Max 2.1A Output 12 v 24 v Battery Voltage Tester SUV Truck Bus RV USB Trailer Cigarette Socket USB Charge for Smartphone

Features:
Size:75mm x 40mm
Power mode: cigarette lighter style
Voltage measuring range: DC 8-40V (DC12V/24V Universal)
Display: 3 bits, Red LED digital tube (if need Blue LED,please check the item B00EZ031KC)
Voltage error: 0.1-0.2V
USB Output Voltage: DC 5.0-5.1V
USB Output Current: 0-2.1A
Function 1: Car battery voltage monitoring,for 12V cars, SUV, 24V trucks, buses.
Function 2: USB charger, for the charger of 0-2.1A cell phones, digital cameras, tablet computers and etc.

Applicable Type: Support Apple/Android, suitable for IPhone/Ipad/Ipod

Please Note: May not compatible with some Samsung tablets, you can use a Samsung adapter.

Package Includes:
1x 2in1 Digital Voltmeter and USB Charger