Reddit reviews Pyle Backup Rear View Car Camera Screen Monitor System - Parking & Reverse Safety Distance Scale Lines, Waterproof, Night Vision, 170° View Angle, 7" LCD Video Color Display for Vehicles - (PLCM7700)
We found 1 Reddit comments about Pyle Backup Rear View Car Camera Screen Monitor System - Parking & Reverse Safety Distance Scale Lines, Waterproof, Night Vision, 170° View Angle, 7" LCD Video Color Display for Vehicles - (PLCM7700). Here are the top ones, ranked by their Reddit score.
LCD MONITOR SCREEN: This backup camera monitor comes with 7" TFT/LCD display, 420 line horizontal resolution and NTSC/PAL video system. Can connect to other camera source and has automatic power-on with reverse gear activationMOUNTABLE: Both car backup camera and backup camera monitor are mountable. The car rear view camera can be mounted flush or hanging. The car camera monitor has a suction cup allowing it to be mounted on dashboards and windshieldsWATERPROOF & NIGHT VISION: This backup camera for cars and other automotive vehicles is IP-68 marine grade waterproof to combat bad weather. It's also fog resistant and has night vision ability. Kit includes all necessary wiringsDISTANCE SCALE LINES: A backup camera kit that features an accurate distance scale line display for proper parking and reversing without relying on side mirrors alone. This reverse parking sensor offers safety for jeeps, pickups and other automobilesBACKUP REAR CAMERA: A rugged backup rear view camera with true color reproduction and video output of 1.0V PP-75 Ohm. It has a low lux performance and a wide viewing angle at 170°. Has color image reproduction and auto white balance
Phone is probably the cheapest option if you don't want to opt for a some kind of a standalone screen.
I was thinking something DIY like this + this, but here's something else that looks like it combines both of those and could be a good option.