The question in the title is an important one. You want to make sure your valuables and the people you love are protected from as many kinds of danger as possible. No wireless home alarm system is foolproof, so it's best to know the ins and outs of yours, from its strengths to its flaws. Here is how burglars can jam your system, measures you can take to prevent that and how worried you should ultimately be about thieves interfering with your wireless home alarm system.
Jamming A Wireless Home Alarm System
If you're simply asking if some burglars have the ability to jam your wireless home alarm, then the honest answer is yes. Any piece of technology made to get a wireless signal at a certain frequency can be overpowered by another signal. If someone knows how that works and has the tools to do the job and is willing to commit a criminal act, then they could theoretically break into your home despite your wireless home alarm system. Even then, they need to know what your setup is to identify the frequency your alarm is operating on. So jamming is definitely doable, though unlikely.
There are certain services that have algorithms designed to protect the wireless alarm systems, but there are a lot of other things you can do to avoid a breach. As mentioned above, a lot of systems use a common broadcast frequency (often a 400Mhz current), so it would behoove you to find a wireless alarm systems that uses a different frequency. There are also plenty of other preventative measures you can take that don't even involve electronics. Barb-wired fences, guard dogs or even regular dogs that bark keep you safer from burglars. The important thing to keep in mind is that there are a lot of options are out there to keep your home safe even if someone goes through the effort and takes the risk to jam your wireless alarm system.
Likelihood Of A Breach
As we've stressed, the chance that your home specifically will be breached is very unlikely. The majority of burglaries occur because burglars see an easy opportunity to steal. Once they come across a wireless alarm system those kinds of criminals will tend to give up. If they do proceed, then they'd have to be highly specialized to avoid being detected. With that in mind, it stands to reason that jamming is only a potential risk if someone targets your home specifically. Burglars would only do that if you have very valuable objects in your home and if they're aware that you have them. That's why the best thing you can do is not flaunt your wealth and go with a home security system that rates highly in other categories like customer service and ease of use. The benefit of extra measures against jamming that are offered by some services aren't typically worth the trade-off. While you should be aware that jamming wireless home alarm systems is possible, you shouldn't dwell on that thought. You'll be happier and likely just as safe for it.