Never seen that in my life, even in red.
I have one in red with the fire lettering that came with a lot of security system parts that I purchased, but unfortunately it was DOA.
They are multitone, similar to the Commander 3:
http://www.pottersignal.com/notification/horns_strobes.php
Nice! And I found one in Quincy on the exterior wall at the South Shore OB/GYN.
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Those are nice tones. Is it loud? I might get one of those in the future…
They sort of look like classic Spectra’s almost. Is that where Potter got the idea from?
I doubt it. They don’t look that similar to SpectrAlert classics, besides the fact that the strobe is on the bottom, and “FIRE” is printed on the side. Although, the brand name engraved on it looks surprisingly like the anti-vandal setup Gentex has on their Commanders. There must be a screw behind the Potter logo…
Is that screw the screw that controls the volume for the horn?
No, it help keeps people from taking the horn/strobe off of the mounting plate. What electronic horn has a screw to control the volume?
I thought that all alarms had a volume screw…
Most electronic horns either have small switches, jumper(s), or a knob that has to be turned with a flat head screwdriver.
So then it is possible to adjust the volume on an electronic horn?
Yes, there’s just no volume screw on most electronic horns. There is a myth of a volume screw on the Wheelock 7002T, but that is just a grounding screw. Anyway, the 7002T isn’t even an electronic horn.
It’s electromechanical and can have lots of different pitches.
That’s the thing I love about electromechanical alarms that electronics just can’t match. It would be cool if they came out with an electronic horn that mimicked the EM alarm, complete with a pitch adjust dial.
Doesn’t the 892 series electronic horn/strobes sound like a DC electromechanical alarm and have a potentiometer (on certain models) to adjust the pitch?
I think the 892-1B might, but the 892-2B doesn’t. My 792-7A-006 has a potentiometer, but it’s put in an awkward place that makes it really difficult to adjust.
Why did they do that
Another version of the System Sensor MASS known as the MAEH has the electromechanical tone. It sounds pretty awesome, even on YouTube!
Too bad that they have all but been made defunct. Though I guess it is possible to replace an older alarm with an electromechanical one. Unlikely, but wiley told me about a school replacing 4041s with a 4903 electromechanical horn so it still gives me hope.
