A security system for detecting and expelling external intrusions at individual
windows is provided. The security system includes an intrusion detection transmission
system (100) having a human body detection sensor (110), an infra-red
sensor (120), a switching unit (130) for connecting the detection
signals from the sensors (110 and 120), and a wireless transmitter
(140) for encoding and wirelessly transmitting the signal transmitted from
the switching unit (130), and a central processing system (200) including
a wireless receiver (210) for receiving, and demodulating the wireless receiver
(210) for receiving and demodulating the wireless transmission signals from
the wireless transmitter (140) in the intrusion detection transmission system
(100), and a home switching unit (220) for controlling operations
of a home automation unit (400) and a warning siren portion (240)
according to the outputting signal of the wireless receiver (210). The operation
of the central processing system (200) which operates at the time of occurrence
of intrusion can be controlled according to the switching operation of a remote
controller transmitter (300) which wirelessly transmits a remote controller
signal to the wireless receiver (210).