I have a Sola-Larm alarm fitted (to a Detheffs) and found after finding a problem that the firm called in the administrator’s last week.
They were also fitted under the rebadged name of ata4security (who closed years ago), esp. by Campbell’s Caravans as part of show deals.
If anyone knows if they are still trading or where support for Sola-Larm alarms might be found I would be interested.