Review on ZEROXCLUB HD Backup Camera System Kit, Loop Recording 7" Monitor With Wired Rear View Camera, IR Night Vision Waterproof Camera With Safe Parking Lines For Bus, Semi-Truck, Trailer, RV, Camper BY701A by Robert Demissie

Good camera view but not something to rely on for back up. Refresh rate is lagging by a second. So you need to be really careful backing up. We have it on our Travel Trailer. Would not purchased again. Spend the $$ on a more expensive model.January 2021 update - Seller has reached out to us to (most impressed with that communication) they are sending us an extender. I will update as we progress to see if that improves the lag. but, the fact the seller reached out is impressive.