Unknown Xiaomi Temp/Humidity found LYWSD03MMC

Hardware
1

Today my HA installation reported a newly detected device, a Xiaomi Temp/Humidity BLE device. Problem is, I am not aware of having one

Under Devices and Service, I see the Xiaomi BLE
and there it shows 1 device LYWSD03MMC with a BT MAC, but as unavailable

I did recently install 2 thermometers using ZigBee

  1. lumi.sensor_ht.agl02
IEEE: 54:ef:....:72:a8
Nwk: 0xa2e0
Device Type: EndDevice
LQI: 24
RSSI: Unknown
Last Seen: 2024-10-09T18:29:21
Power Source: Battery or Unknown
Quirk: zhaquirks.xiaomi.aqara.sensor_ht_agl02.LumiSensorHtAgl02

and

  1. TS0201. by _TZ3000_rdhukkmi
IEEE: a4:c1:...:b4:e4:2e
Nwk: 0x17da
Device Type: EndDevice
LQI: 15
RSSI: Unknown
Last Seen: 2024-10-09T18:29:44
Power Source: Battery or Unknown

which both work fine via ZigBee

and also a new one:

  1. TS0201 by _TZE200_iq4ygaai. ( in reality/packaged as THS317-ET-TY)
IEEE: 8c:65:a3:ff:fe:92:17:19
Nwk: 0xddf2
Device Type: EndDevice
LQI: 144
RSSI: Unknown
Last Seen: 2024-10-09T18:33:56
Power Source: Battery or Unknown

which doesn’t work at all (I very occasionally got a single temp reading, but nothing more)

Questions:

  1. Could one of the above devices also report via BLE as Xiaomi LYWSD03MMC
  2. I am not aware of any neighbors using any such devices either, but it could of course be possible that mine picked up a foreign device
  3. I first got this notice when I was at the office, using my Android HA app (connected via Tailscale). Could it be that the app picked up the BLE device in the office and reported it to my HA? Does the HA app support devices via the app? That sounds strange, but who knows.

I will need to look for a BT scanner to see if the BLE mac address is still active somewhere

2

Best signal of all the BLE devices I scan in my house is coming from my neighbours Xiaomi toothbrush… :roll_eyes:

3

Only way to find out for certain is to pull out the battery off your lumi.sensor_ht.agl02 for 24 hours or more and see if it shows up in a bluetooth scan in that time.

4

How are you so confident that it’s not a neighbor’s? I pick up a handful of devices from neighbors (as well as people driving by, since I have a BT Proxy only a few feet from the road).