Just set these up. The first time I added one, I couldn’t get it to talk properly. Switched from Thing to your driver, reset it again, and everything works great. These respond instantly with a loud ringing AND instantly trigger Smarthings Home Monitor (sending me an immediate alert) without having to do anything else! Fantastic device for $10 each, and exactly what I needed. Thank you putting together that driver!
Note: half of my sensors came with dead AAA batteries, which require opening the sensor up with a very small screwdriver.