Yeah but with so many Advances installed, I’m sure it will take a while for the L to catch up and overtake them.
Does anyone know what this one is? I know it’s a System Sensor, but I remember it not being a MASS. It’s a speaker strobe if that helps.
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This is a System Sensor V400R-24XXADA (I can’t tell what the strobe rating is from that image). For those who don’t know, this is basically a MASS-ADA Speaker/Strobe and was the predecessor of the SpectrAlert Classic speaker/strobe line. These were also available in -ADAS variants, which had synchronized strobe capabilites.
Wow I didn’t know that System Sensor made the MASSes in a speaker/strobe version. That is actually very nice and unique since I never thought about the MASSes as having speaker/strobes.
Yeah. It’s quite cool to me too since it’s synced with multiple brands of notification appliances, not just with the other system sensor MASSes found throughout the building.
Wait. Its synced to the other alarms in the building? What other alarms are in there?
Genesis speaker-strobes and some older version of the Wheelock speaker-strobes (the one with the frosted “FIRE” lens). I’m not sure if they would be using a sync module though or if the EST panel already comes with the protocol.
If I’m not mistaken, System Sensor -ADAS strobes are self-syncing, like the EST Genesis and Enhanced Integrity signals. I can’t help but wonder if System Sensor -ADAS strobes respond to the Genesis/Integrity auto-sync or vice-versa. As for the pre-ADA Wheelock speaker-strobes, I don’t know how they managed to sync with the two former types, but I would love to see that in action :lol: .
Here’s an interesting one! It’s from a YouTube video by sohowcome, name that fire alarm model #!
Siemens U-MMT that is a ceiling mount version. Very rarely do I see ceiling mount versions of any horns expect for the SpectrAlert Advanced series. Though at the Stop and Shop in North Providence, they have Space Age Electronics VA4 horn/strobes on the ceiling (and a Wheelock MT in the Lottery Booth)
They make ceiling mount VA4’s?
I think it was a ceiling mount but I can’t get a good look at it since the ceilings were high so it could have been a wall mount placed up there but it was definitely a VA4 and there were a few that were on the ceiling.
Could’ve been a wall mount put on the ceiling or the same model but fire lettering put on the sides readable from the ceiling.
Finally after long times looking, I finally found the model number for the ceiling mounted U-MMT. It’s called the U-MMT-MCS-C, with the end C standing for ceiling.
That’s actually probably a U-MHU, not a UMMT because you can tell by the longer and ‘cleaner’ sounding code 3 on the U-MHU.
Self-syncing horn/strobes are usually designed to always fire up at the exact same time when power is applied to them, thus all devices in the same NAC will be in sync (synchronization across NACs will depend on whether the panel/power supply turns them all on at the exact same time). Eventually they will drift out of sync because of voltage and circuitry variations, since they don’t actually communicate with each other. The Genesis works this way when not using a sync module. I don’t know if the MultiAlert ADAS also works this way or if it requires a sync module. However, this could explain both sets of devices being in sync, with one being self-synced and the other synced by a module, or both being self-synced, although one set wouldn’t be in sync with the other.
Wheelock translucent strobes cannot be synced. They have a potentiometer which sets the flash rate, but no sync mechanism. Synchronization didn’t become a thing until after ADA strobes were introduced.
https://drive.google.com/file/d/10CEYyZf1Jqm03aGN1GHeT9C_jJ39mTzL/view?usp=drivesdk
Name that fire alarm
Wheelock MB-G6-24 on LSPM-24-VFR strobe plate. Rare find!
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(Didn’t know someone else had already answered)
