X8 system sensor mass horn strobes. all tones test.

[@SirensVacuums]

I love the good ol MASS’s.

[@aidanthetoiletelevatorfire7554]

Has some good harmony!!

[@AdamsFascinatedFireAlarms]

Those three mass horn strobe that bigger Fire word spell on the strobe with it, they have one of those at the church called western heights church of christ in sherman tx.