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Critical System Alarms include:Cooling and heating alarms have detection and monitoring devices that transmit information about your heating and cooling system often directly to a monitoring company. Flood and water alarm systems monitor your plumbing system where even small leaks can go unnoticed and result in thousands of dollars in repairs. Types of Alarm Sensors:Alarm Sensors are essential elements of your home security system. A wide variety of security alarm sensors and detectors are available for use. It is obvious what most sensors do, so we will only describe the main ones used in a basic system. Contact Sensors: Most burglaries involve doors, either on entry or while leaving the house. So protecting all doors is a must. Example: magnetic circuit breakers. Door contacts may be hardwired or wireless; hardwired contacts are usually buried in the doorframe, which is less obvious than wireless and are preferable. Window Contacts: Can be hardwired or wireless. Motion Sensors: It’s the most essential and common form of protection.

 

 

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medic alert servicesGlass Break Detectors: Usually mounted near windows to detect the specific high frequency sound of glass being shattered. They are usually installed on a wall opposite or adjacent to the protected glass and are effective within about 15′ to 25′. Smoke and Heat Detectors: Detect smoke and heat. Chapter II:Our Home Alarm SystemOur Home Alarm System:Our project’s main concern was to build a Home Alarm System using a PIC microcontroller. We started off our project by coding the Keypad, then LCD and the final touch was the sensor. We also added two types of buzzers: one to sound the alarm and the other as a key tone buzzer. The final result turned out to be the following:Figure3. Our Home Alarm SystemMaterials Used: Cost:PIC16F877A 7$4X4 Keypad 2$JHD 162A LCD 6$6V Alarm Buzzer 0. 5$Key tone Buzzer 0. 5$4 MEGA Crystal Oscillator 5$3 Flashing LEDs 0. 1$18 Pico Capacitors 1$Magnetic Sensor 2$Input VoltageWires 0.

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The Stop Outsourcing Security Act will help solve the lack of oversight of contractors in Iraq by requiring that by June 2008, "the President shall submit to each specified congressional committee a report on the status of planning for the transition away from the use of private contractors for mission critical or emergency essential functions by January 1, 2009, in all conflict zones in which Congress has authorized the use of force" s 2398. This bill will examine contractor activities and ensure that renewals will only happen if the president certifies that contractors have undergone background checks and are clear of any crimes that could lead to additional problems with their work in the future. It will also allow congress to have access to information of private military companies including, the number of persons…… Battlefield ContractorsThe use of private contractors to assist the U. S. military forces in times of conflict is not a new concept. According to author Gordon Campbell, ashington has "always" used contractors in times of war. There are many contemporary issues and potential problems when the U. S. military signs deals with private contractors, as it did in Iraq and is currently doing in Afghanistan. The main issue revolves around the concept of hiring 180,000 private contractors to support and in some cases substitute for U. S.