Burglar alarm schematic - Have multitude of programmable features !

Burglar alarm Schematic
The three main components included in the burglar alarms are control panel, one or more detectors, one or more methods for signaling. The two types of connecting the components include hardwired and wireless. Wireless: Wireless burglar alarm is a miracle in the security system. It operates on specific radio frequencies. Wireless burglar alarm includes transmitter and receiver. The transmitters are attached to the detectors and the receiver is attached to the control panel. External sounders are hardwired to the control panel. Some more factors on Burglar alarms Schematic as below:

Hardwired: The hard wired systems use multi-core cable to connect the various components. The basic requirements for connecting detectors to the Control Panel are as follows; Two Cores for the alarm loop, two Cores for the tamper loop, two cores for 12v power and more than one detector can be connected to an alarm loop. The loop kept as a single closed loop. Power to powered detectors must be connected in parallel. The external sounder requires five cores. The tamper loop is a single closed loop. The tamper loop is daisy chained through all the cabling, and devices on it.

The Control Panel: The main function of the control panel is to act as a relay switch, to switch the signaling on when a signal from a detector changed state. Modern Control Panels use integrated circuits for switching. Modern Control Panels have a multitude of programmable features and includes eight Fully Programmable zones plus Tamper, four Codes, Accepts up to six remote keypads; Part set facility, Non-volatile Memory and Programmable zones.

Each Zone has a separate detection circuit. A Zone (if enabled) can have one or more detectors connected to it. Most types of detector connected to Control Panels are Normally Closed devices and are connected to each other in series. If any one of the detectors on the circuit goes Open Circuit (NO) the zone that the circuit is connected to signal the Control Panel. Control Panel reacts to that signal depending on the program of the zone.