New standards cut back system failure risks. In May 2004, Underwriters Laboratories (UL) revised UL 1971, regulating how operating currents are to be measured and how voltage ranges are to be listed and published. Historically, fire-alarm system designers used 24-volt current draw for computing voltage drops on audible and visible (AV) circuits. However, voltage drops [...]
New guidelines include detailed specifications for alarm design and installation. The revised Americans with Disabilities Act Accessibility Guidelines (ADAAG), which harmonize the ADA guidelines with the National Fire Protection Association (NFPA) and American National Standards Institute (ANSI),were completed last year. The Access Board, an independent federal agency devoted to accessibility for people with disabilities, coordinated [...]
A potential industry-wide problem with smoke detectors is unwanted alarms. Improper placement of detectors is one of the major causes of unwanted alarms. Most other cases are caused by improper application, installation and maintenance of smoke detectors.
Grant Anderson, P.E., a Bard, Rao + Athanas Associate Principal, and Brian Mulkerrin, a Senior Associate Engineer, weigh in on Fire and Life Safety design.
System Sensor’s duct smoke detectors help prevent the spread of smoke in air ducts.
System Sensor fire sprinkler products help raise the safety bar in student housing.
InnovairFlex provides a full range of accessories that expand the versatility and usability of InnovairFlex duct smoke detectors into a wide range of applications. This increased product flexibility enables distributors to reduce product SKUs and free up valuable shelf space. In addition, increased versatility and usability enable installers and technicians to save time and money on installation, testing and maintenance.
Many facilities include an HVAC installation on the rooftop. These installations, especially in less temperate climates, are exposed to a broad range of environmental extremes, including wide fluctuations in temperature and humidity.
SpectrAlert® Advance accessories increase device versatility in a much wider range of applications. This increased flexibility enables distributors to reduce product SKUs and free up valuable shelf space. It also simplifies the specification process for designers.
With its new SpectrAlert Advance Speakers and Speaker Strobes, System Sensor has combined input from customers with the ingenuity of a dedicated engineering team to design the industry’s first plug-in speaker line.