Topccd Industrial Co.,Ltd. E-mail: sales@topccd.com MSN1: topccd@hotmail.com Skype: topccd Http://www.topccd.com Features: 1.)7inches LCD color monitor build-in quad 2.)4 ways AV inputs 3.)Super high resolutions with quad pictures 4.)Build-in speaker optional 5.)Full image/2 images/4 images adjustable 6.)Automatic switching with trigger 7.)Suitable for back view / side cameras 8.)PAL/NTSC automatic switching 9.)Power supply: DC12/24V compatible Specifications: 1.)Screen size:7"Inches,4 quad pictures 2.)Full image/2 images/4 images adjustable 2.)Screen:TFT LCD screen 3.)LCD Profile Ratio:16:9 4.)Display resolution:1440(H)*234(V) 5.)Contrastness Contrast:150:1 6.)Brightness:300CD/m 7.)10.)Display of imitate quantity:OSD display 8.)Colour system:PAL/NTSC 9.)Power:DC12 / 24V compatible 10.)Audio output:Inside louderspeaker(0.3w)with the terminal of earphone output(optional) 11.)Car backing function:Yes 12.)Operation temperature:-10~ +50℃ 13.)Storage temperature:-20~ +60℃