Description:
with temperature and tester current meter.
easy to satisfy your need with dual USB socket.
Fixed stand helps stabilize the USB car charger.
Multifunctional product protection tube with 10A, perfect for travel use.
apply for all charging USB mobile phones or other electronic products.
This easily installed 5V, 2.1A output port keeps your smart phone, GPS, MP3.
optimized for the iPad, for the iphone and for iPod-charging fast at full speed. (2.1A for iPad, 1 for iPhone / iPod.)

type: 4 in 1 Car Charger
Output Interface: USB
Input voltage: DC 12-24 V (Error plus or minus 0.2 V)
Output voltage: DC 5 V (Error of plus or minus 0.1A)
Current Outout: 3.1A
Voltage Measuring Range: 5-25 V
Current Measuring Range: 0.1A-3.1A
Compatible Brand: Universal
Compatible Model: Universal
Conversion efficiency: 95%
Measuring Range Temperature: -20 degrees to + 80 degrees (Error about plus or minus 1 degrees)