mmWave Stay Life vs Detection Timeout (red zwave)

I’ve seen the post that gets linked often ( Zigbee Motion Switch • Project Linus • Bug & Enhancement Thread - #130 by MasterDevwi ) but I’m not sure I’m understanding it right. I think these mean:

  • Stay Life (param 108): If the switch senses micro-movements in an area, and that thing suddenly stops moving, how long should the switch report “Presence Detected”?
  • Detection Timeout (param 114): If the switch sees large movement that goes out of detection range, like if a person walks out of the room, how long should the switch report “Presence Detected”?

To test, I’ve set Stay Life to 1 ( 0.05 seconds) and param Detection Timeout to 5 (5 seconds) . Walking in and out of the room works great: the lights turn on right away and turn off in about 5 seconds after I walk out of the room. Things get weird when I change Stay Life to 10 (0.5 seconds). Now the lights turn off after about 15 seconds. I’ve done at least 50 tests with Stay Life at 1 and 10 and am getting consistent results. I can toggle the setting back and forth and get lights turning off in 5 and 15 seconds. What is going on here?

Sensitivity is High and Target Speed is Fast.

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I’ve found the time to do more testing. I’m convinced that param 108 on the Red series is in seconds. All tests were repeated 6 times and and results averaged. Param 114 was kept at 5 throughout.

Param 108 Time (sec) Computed Param 108
1 5.97 0.97
2 6.88 1.88
3 8.22 3.22
4 9.25 4.25
5 10.35 5.35
6 11.25 6.25
7 12.72 7.72
8 13.58 8.58
9 14.23 9.23
10 14.55 9.55