Main Features:
2 AV input sources, 1 AV output sources, easy to switch between two alternative Audio and Video  sources. 
AV input includes primary and secondary audio and video, and the primary input AV (L1 / R1 / V1) is priority (the secondary input AV L2 / R2 / V2 is standby) when the two AV signal are available. It will switch to secondary AV signal if the primary is not available. 
2 AV signal input could be switched by button easily. 
Perfectly suitable for In-dash DVD, Headrest DVD, Front View Camera and Video Camera, Car Camera and Car DVR, the DVR and monitors, etc. 
Compact portable design, easy installation. 
Perfect and high-performance, no AV signal / quality loss. 

Specifications: 
Power Supply: 12V 
Color: Black
Main Item Weight: 126g / 4.46oz 
Main Item Size: 9.0 * 6.5 * 2.5cm / 3.54 * 2.5 * 0.98in 
Package Size: 14.0 * 9.0 * 3.0cm / 5.5 * 3.54 * 1.18in 
Package Weight: 255g / 8.9oz  

Package List:
1 * AV Intelligent Switcher
1 * Power Line
1 * AV RCA Cable 
1 * English User Manual