What do button "2" commands mean, versus button "1" ? The button 1 commands seem valid, but the button 2 commands don't seem valid.

2012-06-05 08:39:59 Received INSTEON "Motion Family Room" off (button 1)
2012-06-05 08:40:01 Received INSTEON "Motion Bedroom Hall" off (button 1)
2012-06-05 08:40:01 Received INSTEON "Motion Bedroom Hall" off (button 1)
2012-06-05 08:40:07 Received INSTEON "Motion Front Entryway" off (button 1)
2012-06-05 08:40:07 Trigger Motion Detector 01 Off
2012-06-05 08:40:07 Trigger Motion Detector 02 Off
2012-06-05 08:40:46 Received INSTEON "Motion Front Entryway" off (button 1)
2012-06-05 11:01:39 Received INSTEON "Motion Bedroom Hall" off (button 2)
2012-06-05 11:05:44 Received INSTEON "Motion Bedroom Hall" on (button 2)
2012-06-05 11:06:16 Received INSTEON "Motion Front Entryway" on (button 2)
2012-06-05 11:14:50 Received INSTEON "Motion Bedroom Hall" off (button 2)
2012-06-05 11:14:51 Received INSTEON "Motion Front Entryway" off (button 2)
2012-06-05 11:32:55 Received INSTEON "Motion Bedroom Hall" on (button 2)
2012-06-05 11:32:56 Received INSTEON "Motion Front Entryway" on (button 2)
2012-06-05 11:33:03 Received INSTEON "Motion Dining Room" on (button 2)
2012-06-05 11:33:09 Received INSTEON "Motion Family Room" on (button 2)
2012-06-05 11:36:39 Received INSTEON "Motion Dining Room" off (button 2)
2012-06-05 11:36:44 Received INSTEON "Motion Family Room" off (button 2)
2012-06-05 11:37:00 Received INSTEON "Motion Bedroom Hall" off (button 2)
2012-06-05 11:37:01 Received INSTEON "Motion Front Entryway" off (button 2)
2012-06-05 15:19:55 Received INSTEON "Motion Family Room" on (button 2)
2012-06-05 15:33:11 Received INSTEON "Motion Bedroom Hall" on (button 2)
2012-06-05 17:35:22 Received INSTEON "Motion Dining Room" on (button 2)
2012-06-05 18:01:36 Received INSTEON "Sliders Family Room" on (button 1)

Button 2 on the SkyLink 2420M motion sensors is the "dusk" detection. When you see a button 2 ON message, that means the sensor has detected that there is not much light in the room. When you see button 2 OFF, it means the motion sensor has detected a moderate amount of light in the room. The light level threshold can be configured either using one of the adjustment dials inside the sensor, or through software if jumper 5 is connected in the back of the sensor.

And if you see button 3 ON, that means the battery in the motion sensor is low and should be replaced soon.

Ah ok...that makes sense. Thanks !