Copied this idea
https://www.instructables.com/Invisible-Zigbee-Deadbolt-Sensor/
But I used a mccgq11lm
Removed board from mccgq11lm and added bigger battery. Removed reed sensor and put on wires so I could located close to magnet when lock is unlocked.
Black wires on right of board go to where the sensor was removed from.
Pictures above show where I put the magnet. Its a little tab that moves back and forth as the deadbolt moves. Magnetic force holds it in place.
Battery and board covered in tape to make sure no shorts, then positioned under the lock.
Shows reed switch next to magnet in unlocked position, where tab is to the far right. Switch is closed because its close to the magnet.
I had to move the switch close to the magnet to make sure it would close when in unlocked position.
Switch held in place by earthquake putty.