Bluetooth controlled relay from embedded Debian sysem

We produce a controller box that moves from job site to job site, and is not necessarily connected to the net.
The box has a Debian-based SBC that we are adding a Bluetooth dongle to.
We would like to be able to control your Bluetooth controlled relay from our box via the dongle
Would we use the Mosquitto package and MQTT to do this?

Thanks

jw