PHOTOBEAM As public security management system, burglar alarm subordinates to the technical precautions, taking use of front-end intrusion detection equipment according to the degree of importance of different parts, risk class, and spot conditions, protects station of no duty, such as storehouse of valuables in financial industry, equipment rooms and main entrance and passageway. Front-end equipment collects intrusion signals, then transfers them into electrical signals, at last, transmits them to control equipment of central control room through wire or wireless. And, alarm signals are displayed on the simulative and graphics screen with flash & sound, so that watch stander can gain alarm message in time. Through security support of system coordinates with guard force, we can realize the full-scale anti-burglar. Features Quadruple Beams/Dual Beams Digital Frequency conversion Active Infrared detector Quadruple frequency/ Dual Beams, simultaneously blocked inspection Digital wave Filtering/ Infrared LED lighting Window sighting telescope 4-band frequency optional Dew and frost proof solution: Heating housing PC engineering plastic material Other additional function: Photic instruction, OK instruction, Test terminal, multilevel LED indicator