I noticed on Ebay these indoor sirens are going for less then $20 USD. I was wondering if anyone has used one and what was your opinion. They seem large and use 4 C batteries. I see Hubitat has a driver for them also.
They work great... Native driver support... and they are LOUD!!! as they should be..
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I got one in 2015 and don't think I've changed the four C batteries once since then. There is a jumper inside to set the volume level, and neither is quiet, but the louder one is certainly....loud, so I'd agree with the poster above. 
(One of few sirens that actually sounds like one.)
If I had to buy something today, I might choose the Aeon Siren/Doorbell 6 instead (nearly the same but the doorbell includes the button for not much more in price). The sound isn't quite as piercing, but they're still believable enough (they have a lot of sounds so I suspect it's really just a general-purpose speaker inside; the Utilitech only does that siren at two different volumes and likely has more purpose-built tone generators). It's also a tad prettier, has a light you can strobe as well, and is USB-powered and would function as a Z-Wave Plus repeater. But again, I'm pretty sure I have yet to change the Utilitech's batteries, and I don't know that I'd ever use a light on my siren.
The batteries do last forever... I haven't changed mine either... Can't remember when I bought it but it has been a few years..
Much appreciated to all. Exactly what i needed to know. Looks like i got the last one on Ebay selling for $20 free shipping
Also recommend. batteries last 4 years plus and it is loud
I have one, and meh, it sounds like a parakeet on meth. I prefer the tone on the dome siren or the aeotec 6 siren/doorbell. The utilitech siren appears to use the same speaker as the dollar store contact alarms.
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Oh boy and i ordered one from Ebay lolo. Hope mine sounds better.
I know it rated for indoor use but has anyone used it in a protected area outside. Wondering how it would hold up.
Oh really? I’m Going to take a look at that. Thank you!
That makes me feel better about my Dome siren. Thanks!
I guess we have different opinions. I like the Utilitech siren because it sounds like an actual alarm, not a tin-ny speaker being all cute and pretending to be one. The Dome Siren is an example of what I don't think sounds good, though I don't mind it for door chimes and whatnot (except it rarely responds quick enough to be useful for that anyway).
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Well I cannot get into the sound debate since I only have had the Dome (Neo Coolcam), and it’s joined directly to my Ring Alarm hub, so response is instant in testing.
Good enough for me.
I have a aeotec gen5 doorbell that I use for door chimes and various noises .. I originally used it as a doorbell until I moved to ring... but I kept it for the sounds..
