The app Find My Device (FMD) is an open source alternative to the proprietary service offered by Google Google Find My Device.
To get help through SMS, send a message with:
fmd [PIN] help
The answer will be:
FindMyDevice Commands: bluetooth - Toggle Bluetooth on and off camera - Take a picture delete - Factory-reset the device gps - Toggle GPS on and off locate - Locate the device lock - Lock the device nodisturb - Toggle Do Not Disturb on and off ring - Make the device ring stats - Get network statistics help - Show the help