Oct 2011

emergency pendant

senior monitoring systemsMotion Sensors: It’s the most essential and common form of protection. Passive infrared sensors: Detect motion by sensing a sudden change in heat. Dual Tech motion detectors use two different technologies in the same unit: passive infrared and microwave. These devices are designed to avoid false alarms since both technologies must detect motion before setting off the alarm. Photoelectric Sensors: These sensors project a beam of light across a hall or doorway to detect motion and are triggered when a person passing through interrupts the beam. Glass Break Detectors: Usually mounted near windows to detect the specific high frequency sound of glass being shattered.

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Oct 2011

retail store security system

fire alarm system for homeThe U. S. Census ureau studies showed that, in 2002, 1. 7 million new houses were built in comparison with 2001 when 1. 6 million new constructions were made. Moreover, the number was expected to grow in the near future.

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