I think it’s the same for all xiaomi sensors so here’s my way pairing them:
- Reset the device: hold the reset button for a few seconds, led will blink a few times then stop, hold for some more seconds then release the button.
- Add a new thing from ST app
- This may be tricky: short press the reset button for some times, if it quick blinks 2 times followed by another 3 times, keep short pressing it after that 3 times blink and you’ll get it discovered. If it doesn’t blink in that sequence, do whatever you like, short press, long press (but not too long or it will reset), smash that reset button until you get that 2 quick blinks followed by 3 quick blinks, you’ll get that eventually. That sequence is the only thing you need to get it discovered
Wish u luck!