This company mainly sales small warning apparatuses like fire alarms, train bells, and other miscellaneous noise makers and visual warning systems. The one thing that would catch anyone's attention from this forum is their wide area warning systems. They appear to resell some of Klaxon's and Sirenco's outdoor warning sirens. On the mechanical side E2S sells 3 of Sirenco's larger mechanical sirens. The sirens themselves seem to be based on the same design as those made by Castle Castings, which is similar to the design used by Klaxon. The smallest is a single tone 12 port unit. The medium sized unit is similar to the smaller siren but with a larger chopper and motor. Klaxon typically uses the 10 port chopper for their single tone sirens, so it's not an exact match to this sirens as far as their pitch goes. They are however paired with motors of the same specifications with 2.2 and 4.0 KW motors respectively. The largest one uses two of the same chopper as the 4 KW unit. This siren is dual tone with a 10/12 port ratio, making it the last of the 10/12 sirens you can get brand new on the US market. While they do ship standard with voltage inputs different from those in the US, they can be ordered in 240VAC. The specs on these sirens are made with the motors operating at 50 Hz, bringing their speeds up to roughly 2800 RPM. On our 60 Hz the motor would speed up to around 3450 RPM increasing the pitch on them along with the SPL to some extent.
These are part of the K-SML series, models K-SML05, K-SML10, and K-SML15 with a SPL of 135, 140, and 145 dB at 1 meter respectively. If my math worked out they should be roughly 105, 110, and 115 dB at 30 meters or 100 feet. I'm not too sure how many dB they would pick up with the motors spinning faster.
They also sell a few different series of electronic sirens. There are two small units, the A-131 and A-141. These are sirens for small applications based on E2S's own controls. The A-131 uses small horns, I believe 35 watts each, while the A-141 uses a single or dual 400 watt horns. The 141 uses the alternate version of the horn that ATI and ASC use for their sirens. This one happens to be made out of plastic instead of metal and uses a design similar to the Atlas CJ-46, albeit with four cores in one horn. I suspect it might be able to throw sound more effectively, as the flares of the horns would probably allow them to exceed 90 degrees of sound dispersion. The larger of the three and the one I'm focusing on for this post is the A-151 series. These sirens are the same electronic ones sold through Klaxon in the UK. As you'll see in the pictures below they use linear diffraction horns with a clamp to the pole design. The clamp itself is based around the design used by SiRcom and WAVES and has a channel for a piece of rectangular conduit to fit in between to carry the wires. These particular sirens are in somewhat of the same situation as the ones from Alertus and MadahCom owned WAVES in that both E2S and Klaxon source them from the Greek company Comtel. In all clear/alert the sirens produce a 475Hz tone, based on what a 10 port siren would sound like on 50Hz. In dual tone the controller offsets the tone by 10 Hz like most typical European sirens, which is a bit unfortunate considering they could shift the pitch a little more and have it sounding relatively close of the classic sound of their dual tone mechanical sirens. In attack they don't sustain, so their attack tone is more of a wail tone like from Whelen or FS. Klaxon and Comtel also sell a small omnidirectional array, but E2S doesn't appear to carry that model in their lineup. E2S only has the 2 horn model displayed on their website, however the Klaxon and Comtel units can go all the way up to 18 horns. Each speaker from what I can tell runs typically at 125 watts like the older analog amplifier based SiRcom systems, making the tallest model 2250 watts. Each amp can push up to 400 watts at full power, however I think the reserve the full power for voice messages the same way Whelen does. In the Comtel spec sheets the amps only are connected to 2 or 3 drivers at once.
These are the specs of the A-151 series from the Comtel website. The scheme of the model is # of amps - # of horns - SPL:
Omnidirectional Sirens:
CS 1-2-106 106db @ 30m
CS 2-2-106 106db @ 30m; this model has 2 amps
CS 2-4-112 112db @ 30m
CS 2-6-115 115db @ 30m
CS 4-8-118 118db @ 30m
CS 4-12-121 121db @ 30m
CS 6-18-124 124db @ 30m
Directional Sirens:
CSD 1-2-109 106db @ 30m; horns side-by-side
CSD 1-2-112 112db @ 30m; horns stacked vertical
CSD 1-3-115 115db @ 30m
CSD 2-4-118 118db @ 30m
CSD 2-6-118 118db @ 30m; horns side-by-side
CSD 2-6-121 121db @ 30m; horns stacked vertical
CSD 4-12-124 124db @ 30m
CSD 6-18-127 127db @ 30m
At the moment I'm unaware of any of the mechanical sirens being sold in the US, however I wouldn't be surprised if one did pop up in the wild. Obviously they will sound higher pitch compared to their UK equivalents and have a flatter sound compared to a 2T22. I'll link to a video below of a CLM Carter style siren for anyone who hasn't heard how these British sirens sound on 60 Hz. While the design of the two are different, the rotor and port design between them are almost the same. They should sound similar, if not identical. As for the electronic sirens there's a know installation of at least two A-151's at Oneok Hydrocarbons Facility in Mont Belvieu, Texas. Installations of these electronic sirens seem to be very rare even in the UK where both Klaxon and one of E2S's branches are based. In a way they remind me of SiRcom because of this, since there are only a handful of systems in Germany where the company is based. I'll link a couple of videos below of what they sound like as well. On a side note, this makes four companies in the US to still offer strictly AC powered sirens with the other three being Sentry, Werden Electric, and Pakita.
E2S Wide Area Warning Systems webpage: https://www.e2s.com/products/fire-and-i ... mily/rn130
Comtel siren webpage: https://www.comtel.gr/language/en/cs-electronic-siren/
Klaxon webpage: https://www.klaxonsignals.com/massnotif ... /products/
Sirenco webpage: https://sirencosirens.com/shop/
Here are some pictures off of their website and the videos. First I'll start with the mechanical sirens:
They would sound similar to this on 240VAC 60 Hz.
https://www.youtube.com/watch?v=faq-oxKZdg4
Here's the electronic siren.
These are from the Comtel website.
Here's a video of one doing yeow and all clear/alert. This unit doesn't have Klaxon logos on the horns, so I believe it is an E2S unit. You can also hear the narrow pitch offset it uses for dual tone.
https://www.youtube.com/watch?v=YXuj6uCjflY
This second video is of a single tone Klaxon ES4S, which is the same as the 18 horn A-151. This single siren replaced a few of the sirens from the Broadmoor system to my understanding. The replacement siren is 124 dB at 100 feet, so it packs more of a punch compared to the older mechanical sirens. It also has a coverage pattern closer to being omnidirectional compared to the cloverleaf pattern of the older units.
https://www.youtube.com/watch?v=CBDTPz-t3tg
