intrusion burglar alarm
Swing barrier gate
CCTV or Closed Circuit Television refers to a visible or covert video system intended for only a limited number of viewers. in Closed Circuit TV (CCTV), the picture is viewed or recorded, but not broadcast. it was initially developed as means of security for banks and casinos; however, today it has been developed to the point where is is simple and inexpensive enough to be used with Home Security System, and for everyday surveillance.