At this time, the use of RF/cellular jammers by criminals to commit residential burglaries or similar crimes is not that common, but the use of these devices has increased. RF jammers are primary (but not exclusively) used by a group known as the “South American Theft Group” or SATG. This group generally targets higher-end homes in affluent neighborhoods. They’re also known to setup counter surveillance by hiding camouflaged trail cameras or cellular cameras in bushes to watch their targeted house. (This information is widely available on the internet via various news articles and reports)
Usually, they’re use jammers that target multiple frequencies at the same time which could prevent the alarm system from communicating via wifi/cell and/or with the wireless sensors.
If you’re using the 319 encrypted sensors, that’ll prevent someone from being able to see the data the sensor is transmitting, but that won’t stop them from being jammed.
The best way to prevent this is to have hardwired IP surveillance cameras with AI capability so you get notified as soon as someone enters your property. It’s also recommended to use hardwired door/window sensors, GB’s, sirens and motions if possible as those can’t be jammed. The alarm panel’s primary communication should be connected via ethernet cable and the internet should be backed up by a UPS (battery backup). With the residential alarm.com packages you can have as low as a 6 minute supervision window so if the panel’s connection to the ADC servers are lost, at the 6 minute mark, you’ll receive a panel not responding message from ADC and the central station will get notified (they would most likely treat this as a communication failure, not an alarm).
The business packages offered by ADC supports UL-1610 180-second commercial supervision. This supervision is a little more in-depth and is usually used in high security environments.
In addition, you would need to enable RF jamming in the IQ 4’s programming to be notified locally at the panel of a jamming attempt.
Your security should be done in layers, including exterior electronic detection (cameras), perimeter and interior detection (alarm system), strong physical security (dead bolts with reinforced doors, reinforced glass etc.), a high-end safe for valuables and good insurance.
To answer your question, “Just how secure is my sys with a IQ 4 and 319 products?”. if it’s up against an intruder with a legitimate RF jammer, it’s not secure at all. Which is one of the reason why I hate when alarm companies push replacing hardwired alarm systems with wireless AIO units (IQ4) and a hard-wired to wireless converter, especially when systems like the IQ Pro exist. They literally downgrade the customers systems by doing this.