Model 2844-222

When I try to add I get this message:

Cannot add device

Cannot determine insteon engine

"Cannot determine Insteon engine" means that the PLM can't communicate with the device.

Either the device is out of range of the PLM or the device isn't in the linking mode. Also check your batteries.

I plugged a usb cable in for power to eliminate a bad battery. The motion sensor is a few feet from my PLM. I held the set button until i heard one beep and got a slow flash. Still got the same error message.

If I recall correctly, you must add some sensors a little differently. Rather than "start linking" option and pressing the set button (and hoping that the ISY can hear it), you must go to the drop-down menu and add the MSII by selecting it from the menu and manually entering the requested data.

@PapaBear

Try doing a factory reset on the MS, then attempt to link it

I did a factory reset.

I tried manually adding using both 2844-222 device types [10.16] [10.18]

Still no luck. Same error message.

Another possibility is that your typing in the incorrect 6 digit address. It very easy to mix up the 8 and the B