Wireless Fire Alarm System Guide

Mammoth Takeaways

• Advanced Radio Frequency Technology: Wireless fire alarm systems use advanced radio frequency technology, providing reliability similar to wired systems but with greater flexibility and ease of installation.
• Key Components: Key components of wireless fire alarm systems include alarm control panels, smoke and heat detectors, and carbon monoxide detectors, each designed to detect different fire-related hazards.
• Maintenance and Installation: Regular maintenance and proper installation are crucial for minimizing false alarms and ensuring the system’s effectiveness in protecting lives and property.

Fire alarm technology has progressed a lot over the years. With each new development, the devices improve and become more reliable.

So, how have wireless fire alarms evolved, and how do they work?

Below, we’ll cover all the ins and outs of wireless fire alarm systems and how you can choose the best option for your business.

Why Choose a Wireless Fire Alarm System?

Technology has improved in leaps and bounds over the past few decades. When wireless fire alarm systems first came on the market, the electronics were not capable of being as reliable as modern-day systems.

Today, wireless alarm systems use the same radio frequency wave technology as mobile phones and smart devices. This means that they have reached the reliability of wired systems in terms of transmitting data with the added flexibility of being wireless.

Understanding Wireless Technology

Wireless applications have been woven into our everyday lives since the dawn of commercially available cell phones. Now, the invention is being implemented in most electronic devices due to its ease of use and mobility.

Radio Frequency vs. Wired Systems

Radio Frequency (RF) refers to the electromagnetic waves that are transmitted through the air to transfer data. Different bands and wavelengths are used for different applications. Radio wave-producing devices have been around since 1897 and the principle behind it hasn’t changed much, but the evolutions in hardware have greatly improved upon reliability and size.

Wired systems have been a longstanding go-to for any electronic-based installation, especially on larger scales. The reason for this is that wires have always been reliable in transmitting data securely. Also, the mechanism and hardware associated with these cables has grown over the past decades, now offering lightning fast speeds. The downsides of a wired system relate to the cost and its rigidity in placement throughout a building.

Advancements in Wireless Technology

In 1999 wireless began on the 802.11 standard and offered speeds up to 11 Mbps. When the internet was in its infancy, this was a completely reasonable speed as internet speeds of the time were not super fast and struggled with large amounts of data. However, over the years the rate of data exchange has vastly increased reaching 9.7 Gbps on 802.11ax, also referred to as Wi-Fi 6.

This advancement has made it easier than ever to create devices that can transmit a lot of data quickly within an established network. Wireless does still have some pitfalls despite all of the improvements. Commonly used frequencies, such as 2.4 GHz, which carry mobile and Bluetooth data and other signals, can become clogged with traffic. There is the option to use the 5Ghz, which is less crowded, but the distance of viability is shorter.

Components of a Wireless Fire Alarm System

A wireless fire alarm system can be broken down into a few key pieces. Here are the most common components found in modern systems:

Alarm Control Panel

This is the main hub of the device. This unit receives, processes, and outputs data. This part is responsible for receiving data from all sensors and pull stations attached to the system. It then interprets that information and initiates protocols such as fire suppression, alarms, or contacting a monitoring station.

The control panel is also where all input from the owner will come from. Some panels have button systems, while more expensive units may have a touch screen. Programming, arming, disarming, and updating are all done through this component.

Smoke Detectors and Heat Detectors

Smoke detectors are the devices and sensors that will recognize potential fire threats. There are two main types of smoke detectors currently available.

• Photoelectric: These devices work by detecting small carbon particles via a beam of photons or light. When this beam is broken by the presence of particles, the alarm activates. These models are most effective with slow-burning fires.
• Ionization: Using a small amount of radioactive Americium-241, this setup generates an electric field that, when smoke is present, is disrupted, and the alarm is activated. Ionization detectors work best on flaming fires, which produce large flames and less smoke.
• Combination: As the name suggests, this is a smoke detector that utilizes both photoelectric and ionization approaches. The result is a comprehensive smoke alarm that is less likely to experience false triggers.

Heat detectors are sensors that use temperature-sensitive elements that can be set to activate in different temperature conditions.

• Fixed Temperature: These units use a proprietary alloy that changes from a solid to a liquid at a specific temperature. This change in form triggers the alarm and alerts that a room has become too hot and that it may be related to a fire.
• Rate-of-Rise: By using two thermistors, this type of heat detector checks and compares the ambient room temperature and any radiant heat. When a rise of 12-15 degrees occurs in the area over a minute, the alarm is set off. These detectors are not ideal for slowly developing fires.

Conventional vs. Addressable Systems

A conventional system, when relating to a fire alarm, is how the fire alarm system is distributed throughout a building and how notifications are presented. Conventional systems have several detectors in different “zones.” If a fire is recognized by a detector, it will alert the zone in which the fire is occurring. This setup can tell you the general area of the fire but not the exact location.

In an addressable system, it’s much more precise. These detectors have their own unique addresses and locations, which can help professionals better find the source of the ignition. This higher accuracy leads to less risk of a fire not being found in time.

Carbon Monoxide Detectors

Carbon monoxide detectors are an important and necessary tool in any building. Carbon monoxide is an odorless, colorless gas that can cause brain damage or death in individuals who breathe it in. The only way to detect its presence before it’s too late is a CO detector.

Electrochemical Detectors: These work by creating a chemical reaction when carbon monoxide is in the air. If the gas is detected, the alarm goes off.

Biometric Detectors: These have a special disk with a gel that changes color when it detects carbon monoxide. This gel reacts like human blood would to the gas. When the gel changes color, the alarm goes off.

Sprinklers and Emergency Signals

Some fire alarm systems are integrated with a building’s sprinkler system. These sprinklers are activated by heat, a manual pull station, or as a response received from the control panel and sensors. Sprinklers will douse the flames in a spray of water sourced from outside the building. The water is expelled using higher pressure in order to provide wider coverage to smother the fire.

Emergency signals are the lights, sirens and other notifications that are played when a fire alarm is activated. Usually a combination of the three will occur. Some units also have the ability to play audio recordings to guide people out of the building in a quick and safe manner.

Installation Process

Planning and Requirements

When approaching any large project such as installing a wireless fire alarm system, planning is necessary. There are also things to consider such as local and federal regulations and requirements for fire alarm systems. It is important to be compliant with these laws not only for business reasons, but also for safety reasons. An improperly installed fire alarm system or one that is not adequate puts lives and property at risk.

Professional Installation vs. DIY

Even though wireless fire alarm systems may appear to be something that you can do yourself, it is highly recommended that you work with a professional. Despite the apparent ease of use, there are a lot of nuances and specifics that need to be considered when correctly installing the system.

Why take a risk to save a few dollars if, in the end, the system doesn’t work and you lose everything? Go with a professional installer who knows the equipment inside and out, who can ensure regulations are met, the system works, and that you and your building are properly protected.

Temporary Installations

Wireless fire alarms are a good choice for worksites that may need fire protection but don’t have the ability to hardwire in a system. It is also useful if the fire alarms need to be moved over the period of a project. Temporary installations are ideal for situations such as construction sites.

Features and Benefits of Wireless Fire Alarm Systems

Real-Time Alerts and Notifications

A wireless system will be able to transfer information quickly. And since so many devices nowadays are smart, it is now possible to have notifications and alerts sent to your smartphone. This is convenient for individuals who are not always onsite at their business but still want to be informed about possible threats or if updates are needed on the system.

Flexibility and Scalability

No wires means no fixed positions. Wireless technology allows for the fire alarm components to be moved or expanded. Additional sensors can be added to a network as a business grows and moves around.

Back-up Battery and Power Supply

Wireless systems are battery powered. That’s how they are able to run without the use of wires and cables. Although batteries have gotten better over time, it is imperative that the battery maintenance be taken seriously with a wireless unit. A dead battery will take a system offline which could leave you unprotected. Some systems may have an additional back-up battery in case of emergencies or power outages.

Remote Monitoring and Control

Another benefit of wireless systems is that they are able to be monitored and controlled remotely. Using a mobile app or web portal, users can interact with their systems and check alerts, activate protocols, or update the system.

Ensuring Safety and Compliance

Legal and Regulatory Requirements

Fire Codes and Standards:

• Fire alarm systems must adhere to national and local fire codes and standards. These codes ensure that the systems are designed, installed, and maintained to provide effective fire detection and response.
• Organizations like the National Fire Protection Association (NFPA) set these standards, such as NFPA 72, which outlines the requirements for fire alarm systems.

Permits and Certifications:

• Installing and operating fire alarm systems often require permits from local authorities. These permits ensure that the systems comply with the relevant safety standards.
• Additionally, components of fire alarm systems must be certified by recognized testing laboratories (e.g., UL – Underwriters Laboratories) to ensure they meet safety and performance criteria.

Building Codes and Safety Measures

Design and Installation:

• Fire alarm systems must be designed and installed according to building codes, which specify the types of detectors, alarms, and control panels to be used in different types of buildings.
• These codes also dictate the placement of detectors and alarms to ensure comprehensive coverage and prompt detection of fires.

Safety Measures:

• Fire alarm systems are integrated with other safety measures, such as sprinklers, emergency lighting, and evacuation routes, to provide a holistic approach to fire safety.
• Systems should include both audible and visual alarms to cater to all occupants, including those with hearing impairments.

Inspections and Maintenance

Regular Inspections:

• Fire alarm systems must undergo regular inspections by qualified professionals to ensure they are functioning correctly. These inspections typically include testing detectors, control panels, and alarms.
• Inspections help identify and rectify any issues before they compromise the system’s effectiveness.

Maintenance:

• Routine maintenance is essential for the reliability of fire alarm systems. This includes cleaning detectors, replacing batteries, and ensuring that all components are in good working condition.
• Maintenance schedules are often dictated by the fire codes and standards, which specify the frequency and type of maintenance required.

Record Keeping:

• Proper documentation of inspections and maintenance activities is crucial. This helps demonstrate compliance with legal requirements and provides a history of the system’s performance.
• Records should include details of any issues found, repairs made, and the dates of all inspections and maintenance activities.

Addressing False Alarms

False alarms can be a hassle, but they may also be a sign of a malfunctioning system or that your unit is in need of maintenance. Below are some of the most common reasons that may cause a fire alarm malfunction:

Causes of False Alarms

Environmental Factors:

• Dust and Dirt: Dust or dirt accumulating on smoke detectors can trigger false alarms.
• Steam and Humidity: High levels of steam or humidity can be mistaken for smoke by some detectors.
• Aerosols and Smoke: Smoke from cooking or aerosols from sprays can activate smoke detectors.

System Malfunctions:

• Faulty Detectors: Malfunctioning or aging detectors can send false signals.
• Wireless Interference: A compromised signal may cause unnecessary triggers.
• Power Surges: Electrical surges can disrupt the system and cause alarms to go off.

Human Error:

• Improper Installation: Incorrect installation or placement of detectors can lead to false alarms.
• Poor Maintenance: Lack of regular maintenance and cleaning can result in false alarms (see environmental factors).
• Accidental Activation: Manual call points being accidentally or maliciously triggered.

Steps to Minimize False Alarms

Proper Installation:

• Ensure that fire alarm systems are installed by qualified professionals who follow manufacturer guidelines and building codes.
• Place detectors in appropriate locations to avoid areas prone to false triggers, such as kitchens or bathrooms.

Regular Maintenance:

• Schedule regular inspections and maintenance to keep the system in good working condition.
• Clean detectors regularly to remove dust, dirt, and other contaminants.
• Replace aging or faulty detectors promptly to maintain system reliability.

Environmental Control:

• Minimize the use of aerosols and control steam in areas with smoke detectors.
• Use appropriate types of detectors in different areas (e.g., heat detectors in kitchens instead of smoke detectors).

System Upgrades:

• Upgrade to modern fire alarm systems with advanced detection technologies that reduce false alarms, such as dual-sensor detectors.

Training and Awareness:

• Educate building occupants on the proper use of the fire alarm system, including how to avoid accidental activations.

Choosing the Right Wireless Fire Alarm System for Your Needs

Assessing Building Size and Structure

Choosing the right wireless fire alarm system begins with assessing the size and structure of your building. Larger buildings with complex layouts require more sensors and alarm points to ensure comprehensive coverage while also considering potential sources of interference like thick walls or other wireless devices.

It’s important to select the appropriate types of detectors, such as smoke detectors for most areas and heat detectors for places like kitchens, to ensure accurate and timely detection. Additionally, ensuring the system’s wireless range can cover the entire building is crucial, potentially necessitating repeaters or additional base stations.

Considering Building Occupants and Activities

Considering the building’s occupants and their activities is equally important. Residential buildings may benefit from user-friendly systems with voice alerts and mobile app integration, while commercial buildings might require more advanced systems that support integration with other safety and security features.

In industrial settings, choosing detectors that are less prone to false alarms from regular operations is key, whereas schools and hospitals need systems that facilitate quick evacuations and reliable communication. Scalability and flexibility are also vital, ensuring the system can adapt to changes in building use or occupancy, providing robust and comprehensive fire protection tailored to the specific needs of your environment.

Mammoth Conclusion

Ready to arm your business with a top-of-the-line, reliable wireless fire alarm system?

Mammoth Security can help! With years of experience and trained techs, we can help you find and install the perfect solution.

Reach out to us today for a free onsite consultation and see how you can protect your assets from fire.