SafeLine - elevator phone system. Probably CAN protocol (CANopen-Lift)
https://play.google.com/store/apps/details?id=com.safeline.connect&hl=en_SG&gl=US

https://www.safeline-group.com/media/4587/safeline-connect-flyer-en-2-01-web-view.pdf

"3. Select the unit of choice and enter the unit’s
password. If you do not know the password, simply
restart the equipment (for instance the SL6) and try
again. You now have a 10 minute window when the
unit does not ask for a password."

Oras
https://play.google.com/store/apps/details?id=com.taelek.oras&hl=fi&gl=US

 

Solum

 

AR Timing

 

HMSoft
http://www.martyncurrey.com/hm-10-bluetooth-4ble-modules/

Unknown Nordic Semiconductor