I started using this a couple months ago. Uses the Find My app if bike needs to be tracked but I really like the alarm. Works great for during rides for a quick stop at 7/11 or anytime I need to leave unattended for a few min. Has a pretty loud alarm. Wouldn't be a complete substitute for locking up but ok for real quick stops.
https://us.knog.com/products/scout
https://us.knog.com/products/scout