I heard it does alert and wail.

Thanks to a help of a friend, I found where the siren at the Phoenix WWTP is. It’s a whelen vortex! Not sure about testing tho.

The Siratrol is a assembly containing the AR/AF timer and a radio called a ARC. Mine is a ARCH because its a VHF frequency. I do nit have photos handy now but I'll post them here when I get the chance. It is a radio receiver that is one per siren. it receives the activation tones to activate. most a...

I bought a DTMF ARCH from ECS and it worked fine. I can post photos here if you want.