How to erase then re-learn sensors in QH series system?

QH series erase and re-learn process:

Do step 4 first, then step 1 to 3 as shown below:
SK602.jpgIf it's still not working, then the sensor doesn't function anymore, and it needs to be changed.

If you hear a chirp sound from the receiver, that usually means the battery power is low in the receiver, change them with fresh ones.

Check out more details in the instruction:

SK602 instruction