House Alert System from Do It Yourself Security
You don't need to have a traditional installer put in your security system, and you still get the house alert system that is effective in deterring all intruders.
In the event of an alarm with a do it yourself security system the entry delay period gives you the opportunity to disarm the system before the audible house alert system activates. Once this entry delay period expires cover your ears!
House alert systems are LOUD! At SimpliSafe we provide a do it yourself security system with a totally upgradable house alert. When the alarm is triggered the 85dB default house alert will sound, and so will all of your additional 105dB sirens.
These sirens scream! You can add as many as you would like into the system for an absolutely ear-shattering decibel level. At 115dB you run the risk of permanent hearing loss, so make sure to test the system at a safe distance.

The house alert system can be triggered by burglary, or remotely by Panic button just like a car alarm. The deterrent effect of these house alerts is well documented; so even if an intruder makes it in they will not be able to stand the sirens without the risk of becoming deaf. The house alert systems are THAT LOUD!
When you couple a house alert system with the security alert system from SimpliSafe, you'll know exactly when the home invasion took place, and the chance of catching the would-be thieves is greatly increased.