I am having an issue with a smartpresence that is sitting in a car continually telling me it left, then comes back, when nothing at all has moved. I am told it has -74dBm RSSI. I am assuming this it loses it’s signal sometimes because this may be too weak? I tried plugging in a portable plug close to where this is, and the plug works fine, but is the plug a repeater? Is the smartpresence zwave or zigbee?