Does anyone know how to physically locate a Zigbee sensor that could be placed in your home OR potentially a neighbors home? I have a Contact Sensor Visonic MCT-350 SMA adding itself to my HE. I have only (4) of these devices and they are all accounted for. I have also double checked the Zigbee ID in case I am dealing with a potential ghosting and none of the IDs are identical.
Also could this be my ST hub? Just curious for any advice.
Also try going into Zigbee setting and click on Zigbee logging. Compare the signal strength of that device to the rest. Possible it's weaker than the rest could point to your neighbors or strong for a spare you have forgotten somewhere.
I'm not a ZigBee expert by any stretch of the imagination but I have a few thoughts:
If it is an errant sensor from a nearby neighbor then it will not show up on their system. I assume a ZigBee can only be paired to one hub at a time.
If I had such a problem I would simply shut down all four devices one a time and see what the hub thinks. If all four were disconnected (battery removed?) and your "extra" device was still there, I would simply delete it and see what happens.
I continue to delete it but it comes back automagically. I believe Zigbee enables devices previously connected to connect again. I know my neighbor had a security system from both Vivint and now Xfinity installed. He had the newer implementation which used a lot of Zigbee and Zwave devices. Worst case scenario is I name it zzzzzcintact and not really ever see it in my list per se’