Delaying is the primary function of physical security measures such as the solid core doors, deadbolts, and adequately anchored strike plates. Although alarm systems are a security tool, they are vulnerable to attack. Find out what the alarm company does to protect your security device. Most alarm systems are dependent on the phone line for their ability to make notification to the alarm company and the police. All alarm systems require electrical power.
Most alarm systems come with some form of alternate battery power.
The combination of audio and visual aids draws attention to the affected premises and limits the intruder's time or threat. Some amount of delay, usually 30 to 45 seconds, is built into all alarm systems to allow the alarm user time to disarm the system. During criminal incidents, delays only work in favor of the intruder. The delay on your alarm system should be as short as possible and nonexistent in some circumstances. Only one door should have a delay to allow entry upon opening.