CAREUD 903NF Plus TPMS Unboxing + Impressions

Hello, this post is just photos of what's in the box from the 903NF Plus TPMS sensors. I'll update the post when I install them if they're horrible in any way or they fail, but for now, I wanted to archive the manual and contents of the box, for anyone else like me who can't stand the state of online shopping.

I chose this TPMS because it was the only one with replaceable batteries for an internal sensor. I haven't found any other TPMS, either OEM or aftermarket, that does this.

Most people site concerns about having replaceable batteries in TPMS, as it they say it would cause issues with moisture and humidity. I couldn't find any such reports from existing users of this device. Furthermore, it does look quite well sealed and the electronics still seem to be in rubber, same as all other TPMS - only the battery is in its own replaceable compartment which makes sense!

What's in the box

You get:

4x TPMS with a little compartment to replace the batteries!

A bag with the tire stems and a small wrench

Stickers to indicate which tire the tpms is in and a warning to install it in your car first

1x Screen with a smaller ball mount (compared to things like phone mounts). The power is detachable and appears to be a smaller barrel plug, similar to an older Nokia phone. Says it takes 12V direct, so I assume it's a range.

2x Cigarette Adapters, one with a long cable and on-off switch

A separate sticky ball mount

Manual

Interesting things I noticed from the manual:

There's a battery voltage indicator which is nice. There's also a low battery voltage warning at 11V which is useless, you're done by then.

Sensors are in fact 433.92MHz, NOT BLe as another review mentioned!

You can rotate tires! Second page has two ways of doing it, it seems, they're both manual, either you tell it where the tires moved or you deflate and reinflate them to pick them up again.

Also has spare tire support it seems in some screenshots, but you only get 4 sensors in the box. Not sure if getting another sensor would work.

Manual says the display auto powers off after 3-5 minutes of being stationary, might be interesting for hardwiring it.

Will update if things go wrong :D

UPDATE: Install went smooth, no issues so far! Screen is a little dim - that’s the only down side, but if you look at it from the top angle it’s a little better. So maybe consider that during install. Otherwise the product performs exactly as advertised. A rare feat for a random AliExpress product! Everything is configurable as seen in the manual, and the audible alerts are nice and loud. Buttons are a little tricky to click but not an issue at all.

Not sure what the note about plugging in the screen before installing the sensors was. I did it - but it just started beeping for low pressure after a few minutes as expected. I’m pretty sure it would have picked them up regardless, but it’s probably best to follow the instructions.