Can I put a single motion sensor in away mode during the home mode. I have a garage I would like to put a motion sensor there.
You can have a motion sensor actively monitor for motion in either/or both Home and Away mode, although most situations you’ll only see people leave motion sensors armed in Away mode. You can go into your Modes settings for the alarm and select that motion sensor to be armed in Home mode. Just be aware these things may not work correctly if it gets extremely cold in your garage. If your garage temp dips below 32 degrees I wouldn’t advise placing a motion detector inside.
I was going to do the same thing, but my garage just gets too cold. I instead placed a contact sensor on the door leading into the garage (which of course only accomplishes anything if it’s an attached garage).