I wanted to set up some cameras for surveillance around our motorhome as well as added cameras to aid in driving. Did some research on four camera systems that might do the job and found some info on systems by an outfit called JOINLGO that seemed to have several different types to choose from. I wanted something that would record with time and GPS input and that I would also be able to monitor off site through my phone. Finally settled on the model V90-WS8 that had GPS in, WIFI capability as well as HDMI out to a standard monitor. System came with DVR module that can record on two SD cards, (up to 512 gig each) and/or 512gb SSD. Also included two flange mount cameras for front and rear and two “ball” mount for left and right side. There was the option of a 7” or a 10” monitor display, I chose 7” since I didn’t have a lot of room anyway. And I was hoping to get output to an existing monitor I had in the dash as well. Everything worked out very well and I think this will be a big benefit to us in our future travels. Will do updates in the future as we use the system and see if there are any problems that come up.Below is a list of the specs. and a link to Amazon:
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Support video searching function so that we can easily get files of a certain period. (certainly not as easy as they assume-took me several tries to find and replay files!)
Support realtime playback, as well as review the video on computer. (haven’t tried on the computer yet-you have to use their playback software which is a “.rar” file that requires a separate extractor)
 Support remote control and mouse operation.
 Equipped with high-speed video recording at 30fps per channel.
 Recording video can be overlaid with date/ time, plate number etc..
 Optional file packing time to meet your real requirement.
 Support wide range of voltage input from 8V to 32V.
 Support 2 SD card, and supports maximum 512GB SD.
 Support upgrade via SD card.
 Support OSD menu.
 H.264 Video Compression Technology.
 4 Channel 1080P AHD real-time recording (1080N/720P /960H/D1/CIF for selection)
 Four channel 4pin connector video and audio input, one channel AV connector video and audio output.
 SD card design for storage, more convenient and vibration-proof than hard disk version.
copy this and paste to Amazon search:
JOINLGO 4-CH WiFi GPS 1080P Truck Camera System Real-time Lopp Video Record Video, Remote View on APP/Web, Waterproof 120 Large View Angle Camera for Van RV Bus a.co/d/0dHHP15G