Fire alarm services

Things to Consider When Buying a Fire Alarm System

Fire alarm systems are systems that notify people of a fire. Smoke detectors and heat sensors can automatically activate the system. Manual activation devices can include pull stations or manual call points. Here are some things to consider when buying a fire alarm system. You need to consider the design requirements of your building. If you do not understand these factors, consult with a professional. Then, you'll be able to purchase the right system for your needs.

Output Circuit

A basic output circuit for a fire alarm uses the Analog to Digital & Comparator Module (ADC). This device converts an analog signal from the LM35 to a digital signal. This digital signal activates an output, usually a buzzer. Before you can use this device, you need to make sure that the output mode is Active High. You can set the voltage level adjustor to the activated temperature you need.

Indicating appliances

An indicating appliance is a fire safety system that uses lights to alert people to the presence of smoke or heat. The fire alarm control panel then receives this information and places the system into an alarm state. The indicating appliance, on the other hand, uses a beam of light to detect smoke across large areas. This means that fire departments and other personnel can respond more quickly to the fire. Indicating appliances are commonly referred to as "annunciators."

Types of systems

There are various types of fire alarm systems. Two-wire systems are common for small buildings. These systems operate on conventional system technology, with the central part sending signals to detectors and the user. Fire drills are used to train people in public places. Two-wire systems are generally more expensive than four-wire systems, but they are more flexible during operation and have additional features. Listed below are the main types of fire alarm systems.

Design requirements

AHJs, or the authority having jurisdiction, review fire alarm plans to ensure code compliance. Fire departments often lack a fire protection engineer on staff, so they may not understand the code requirements and specifications for fire alarm systems. AHJs should work closely with you to determine the specific design requirements you need for your building. There are many benefits to hiring a fire safety engineer to review your plans, including the ability to predict changes in fire alarm regulations and anticipate issues before they arise.

Cost

When choosing a fire alarm, there are two main types: conventional and addressable. Conventional systems are fairly inexpensive, and can monitor two to four zones. Deluxe models can accommodate up to 36 zones, supporting up to 20 detection devices in each zone. However, if you have a large floor plan, this type of fire alarm might not be practical. Instead, you may want to opt for a more advanced, addressable system. These devices can cost between £700 and £1,500 per unit.