What sensors are needed for a door knock?

[JDRoberts]

@BigHoss

The pressure sensor is a good idea, another thought would be to trigger an alert if say a door knock is detected within say 15 seconds of the Ring doorbell motion sensor.

Yes, that would be a good idea also. .

As far as what to search the forum for, just try “knock.” I’m not suggesting you read them for any specific smartapp, but rather that you read them for the feedback on how reliable the process was. Because it didn’t really matter which smart app used or which device was used, there are just a lot of false alerts in knock detection.

Here’s a good one:

Door knocker going crazy

There have been a few topics on this in the past, but I’d like to find out what everyone’s current experience is. I have 5 SmartThings Multi sensors, each on a different door in my house. I have all of them configured with the Door Knocker (or whatever it’s called) SmartApp to let me know when someone knocks on a door or tampers with it. Lately I’ve been getting false positives. The front door was issuing 5-6 knock alerts a day. It’s a very solid wooden door, so stray vibrations don’t seem likely, and I was able to witness a few while I was right next to the door, and was able to confirm that there was no wind, thermal expansion, etc. triggering the sensor. I notice that logs show the sensor going active and then inactive, so it seems like a sensor issue instead of a SmartApp issue. Sup…