With the impending discontinuation of the hard copper (POTS) phone lines, and in fact many municipalities already no longer have hard copper pairs from end user to the fire department dispatch center, is it a violation of NFPA 72 if the DACT connections to the fire department use PBX phone lines? Some fire alarm system [Read More]
Do fire alarm strobes always have to be synchronized?
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I was recently asked a question about whether two strobes had to be synchronized if they were the only two in a field of view . The facility’s fire alarm vendor told him that if a field of vision had just two strobes in it, they did not need to be synchronized. When he tried [Read More]
Do single station smoke alarms have low frequency sounders?
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NFPA 72 now requires a 520 hz square wave fire alarm signal in smoke detector sounder bases provided for publicly available sleeping areas. The 520 hz tone has been shown as more effective in waking people of a certain age (ahem), deep sleepers or those that may have had a few too many the night [Read More]
What Version of NFPA 72 Record of Completion is IDPH Using?
Since we service many hospitals and long term care facilities, we run into a number of different opinions on which version of the NFPA 72 Record of Completion (ROC) the Illinois Department of Public Health (IDPH) is requiring as part of its closeout documentation. You’ll get different answers, depending on the general contractor. Since the [Read More]
Can I Use VoIP to Replace My Fire Alarm Telephone Lines?
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Utilizing the internet to send fire alarm signals to a monitoring station is a subject that confuses end users, designers and installers alike. Many installers will just say ‘You can’t’ regardless of the equipment currently used, even though that’s usually not the case. While it’s true that older, existing equipment probably can’t use VoIP, there are options [Read More]
Elevator Recall Integration with Fire Alarm Systems
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What is elevator recall? When is it required? When should it be integrated with a fire alarm system? How is that accomplished? These are a few of the many questions both elevator and electrical contractors have when elevator work is performed. With the constantly changing technologies and capabilities of elevator control and fire alarm systems, [Read More]
Using Wireless Smoke Detectors With Fire Alarm Systems
The newest development coming out of the various fire alarm manufacturers is wireless smoke detectors and control/monitor devices. These UL 268 and UL 864 approved devices can be programmed to act like a stand alone, battery powered smoke detector with the added benefit of being supervised for proper operation and without having to replace the batteries every [Read More]
Does a Renovation Project Change Elevator Recall Requirements?
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We frequently get questions about whether an office buildout/renovation changes the existing elevator recall sequence or mandates it if there is no recall. The simple answer is that if the elevator equipment is not substantially altered after its installation, the requirements applicable at the time of installation remain in force. Whether or not the space [Read More]
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