Instruction: Answer the given question using the supporting document.

Input:
Question: If I connect directly to 12 VDC will it work as an alarm horn.
Document: It is a nice horn. It's solid and mounts up quickly and easily. It has a jack to plug into your CB which makes it even easier. Problem: not very loud. If you want to get the attention of the girl at the crosswalk it's fine. If you want to hail a kid with a loud stero--not going to work. Just shake your fist instead.
I was surprised how well this little horn works. I'm using it outdoors with a 30 watt amp and it's LOUD!
I purchased the siren to replace the one for my house alarm. And it is nearly identical. Good fit, works well, and good price.
This speaker replaces a bad trumpet horn that I had for my CB radio. The speaker is of good quality and light weight. The included RCA jack made installation into the CB a snap. Great purchase and a good price.
When connected to it, it makes it about 5 times louder than the internal speaker and I can hear it clearly from another adjacent room.This will also make a nice outdoor speaker for a Halloween decorated spooky house!One more thing - The box/packaging that it comes in is a rather nice looking box suitable for a nice wrapped present or gift.Don't get your hopes up too high and this horn/speaker will do a fine job...at what it is good at doing.
Be careful not to place your ear(s) in direct or close proximity when playing loud sounds through this horn/speaker.Nice circular bracket allows for mounting on and at various angles and is adjustable.I gave it 3-stars for rating because although it is a great little bargain, I didn't want people to think it was going to sound like a police car speaker or an expensive bullhorn. The horns they use in police cars are very expensive, high quality, handle much more power and sound professional.
I sent 2 hours making and installing a bracket and running the wire to the CB just to have it not work. Waste of money and time. Should have check it before installation.
I ordered this speaker for the pa on my cb radio. I hook it up and it doesn't even work. it was the perfect size if only it worked. then i tried to email and call the seller. And the seller hasn't even got back to me, and they wont replace it.
I connected it to my CB and mounted it under the hood of my vehicle.It works well and scares the neighbor kids (and landscapers at work) when I use it.&#34;Come out with your hands up! !&#34; always seams to get everyones attention.
I had hooked it up before I attached under the hood and ran the wires, it worked. After I attached under the hood and hooked it back up to my cb it didn't work. The tip on the jack was loose and did fall off so I am going to try to get another jack and just replace it.
Answer: No, it is not a stand-alone alarm horn that is tripped simply by applying voltage; it is a hailer requiring a signal source (voice/music/alarm). It is simply a speaker.