DC 12V Wired Mini Sound Light Alarm Horn Siren 120 dB Home Security Sound Alarm System(12, Volts)

Conforme a la description

Extrem laut ;-) für meine Zwecke hätte ich mir noch eine Lautstärkeeinstellung gewünscht. So muss ich die Sirene manuell dämpfen. Aber dafür kann der Hersteller ja nichts ;-)

tutto ok

No me gusta tanto . Hay mejores que se vende

This alarm works great! It is all plastic construction, glued shut it seems (I cannot open it) with a round adhesive sticker on the back, I don't know how long that adhesiveness will last outdoors, but there are two screw holes that can take M3 or M4 screws, and the hole centers spacing is about 27mm, so it will be easy to install. A couple more screw holes would have been appreciated though. The enclosure feels made of a thick plastic, no part of it flexes, and the red lip does not flex easily either, unless you try to squeeze very hard. However, it's not ABS or some other tough plastic, and the finish looks smooth and cheap, but you can't expect it all at this price. I think the construction is very acceptable. The cable length was 50mm, which is quite generous. The alarm flashed red through the front plastic, when sounding. See the attached video to hear what it sounds like, I had to muffle the item in order to record that, it is extremely loud otherwise. Since it is glued shut, I suspect the item is reasonably weather resistant, provided no direct rain falls on it. The attached wire does not have strain relief externally, and is in a loose hole, so you'll need to make sure no rain falls in there. From experience, some electronics does not need to be water-tight in order to work outdoors for many years, provided direct rain is avoided, and if moisture is not sealed inside. Worth doing a check periodically though, if you're relying on that. I think it would also be worth using more than one alarm, for a bit of redundancy if one fails. I measured the current, it seems to peak at 120mA at 12V (I purchased the 12V model), this was using the 'max hold' on a Fluke meter, there may be higher very brief peaks of course.