Wireless Dual Backup Camera with 7” Touch Button Rearview Monitor for RV Trailer Truck Motorhome Camper Digital 1080P AHD Rear Sizeide View Cam with Long Range Operation Sizeignal DVR Sizeystem Xroose CM2

7 Inch Capacitive Touch Button Sensor Screen -Durable, extend service life.-Less the possibility of water-in.-Built-in DVR Recorder-Included 32GB SD card 128GB maximum storage-2 channel monitor-Cigarette lighter charger Product FAQ 1.How to setup more camera?Answer:MENU►CAM-SETUP►ON/OFF2.How to adjust the paremeters of the video?Answer:MENU►PICTURE►Brightness/Contrast/Hue/Volume(No sounds)3.How to switch NTSC&PAL?Answer:MENU►SYSTEM►NTSC/PAL4.How to turn off the parking guidelines?Answer:MENU►SYSTEM►P-LINE5.How to rewrite/ formate the SD card?Answer:MENU►RECORD