How to Set Up the 70mai 4K A800SE Bundle with Rear Cam

Quick answer

Start by mounting the 4K A800SE front cam, then run the cable to the RC22 rear cam, attach the CPL filter to reduce glare, insert the 512GB micro SD card, and connect the battery pack for extended parking surveillance.

Installation steps

1. Mount the front cam: Clean the windshield area behind the rearview mirror. Peel the adhesive film from the mount and press firmly for 30 seconds. Route the power cable along the headliner to the 12V outlet or hardwire kit. Test the camera angle before the adhesive fully cures; repositioning later is difficult.
2. Connect and mount the rear cam: Plug the RC22 rear cam cable into the A800SE’s rear port. Run the cable along the headliner and down the rear pillar. Mount the rear cam on the rear windshield using the included adhesive pad, ensuring a clear view of traffic behind. Avoid kinking the cable near door hinges; use a trim tool to tuck it securely.
3. Attach the CPL filter: Screw the CPL filter onto the front cam lens until snug. Rotate the outer ring to reduce windshield reflections and glare. Check the live view on the app to confirm the filter is oriented correctly. The CPL filter reduces light by about one stop; it’s ideal for daytime use but may slightly darken night footage.
4. Insert the memory card: Locate the micro SD card slot on the A800SE. Insert the 512GB card with gold contacts facing the front until it clicks. Format the card through the camera menu before first use. A 512GB card at 4K resolution records roughly 40 hours of loop footage; set the loop recording to 3-minute segments for easier file management.
5. Connect the battery pack: Plug the battery pack into the A800SE’s USB power port. Secure the pack with the included adhesive pad in a location that doesn’t obstruct the driver’s view, such as under the dashboard or behind the glove box. The battery pack provides backup power for parking mode; charge it fully before first use for maximum runtime.
6. Test the system: Turn on the car and verify both front and rear cameras are recording. Use the 70mai app to check live feeds, adjust settings, and confirm the CPL filter is reducing glare properly. If the rear cam feed is not showing, check the cable connection at both ends and ensure the rear cam is selected in the camera menu.

What’s in the bundle

• 4K A800SE Bundle: Front Cam + Rear Cam + Memory Card + CPL Filter + Battery Pack: The 4K A800SE Bundle features a 4K A800SE front cam, an RC22 rear cam, a 512GB micro SD card, a CPL filter, and a battery pack. You get a complete dual-channel recording system with glare reduction and ample storage right from the start, so you don't need to purchase extras.