HTI+ Exam Cram™ 2 (Exams HTO-101, HTO-102)

Physical Devices

The six major physical components of a home security and surveillance system are described in this section. Although some designs include additional components for enhanced performance or custom installations, the physical devices described here are considered the basic building blocks for a security and surveillance system that will provide adequate protection from intrusion. The essential physical assemblies include

• Keypads

• Sensors

• Security panels

• Cameras

• Monitors

• Switchers

Keypads

The keypad is the device used by the home residents to initiate commands for control options and observe the status of the security system. As shown in Figure 3.3, it usually contains an alphanumeric keypad and LED displays that indicate the status of ...