Siemens HFP-11 Intelligent Fire Smoke Heat Detector FireFinder XLS Used Original

The Original used SIEMENS HFP-11 FIRE ALARM SMOKE HEAT DETECTOR offers high-sensitivity detection for optimal fire safety. Designed for precision, it's ideal for commercial spaces. With a minimum purchase of 5 pieces, enjoy FREE fast shipping, ensuring delivery within 3 to 8 working days for a hassle-free experience and return. Fire Print Detectors And Nuisance Alarms The neural network within each Model HFP-11 FirePrint detector is optimized to reject the most common nuisance alarms for its selected FirePrint Application; e.g. Parking Garage or Health Care. If the detector is exposed to an excess level of smoke or aerosol for an extended period of time, the detector is programmed to make the “safe decision” and signal an alarm condition. Because the amplitude and duration of deceptive phenomena are unbounded, the rule of thumb is to keep detectors as far as practical from sources that can produce an unusually large quantity of smoke for about a minute. This effort during placement of detectors within a FirePrint Application enhances the ability of FirePrint's deceptive phenomena rejection. Avoid close proximity of detectors to smoke sources such as oil burners, electric heaters, kitchens, garages, and areas of high relative humidity where condensation may occur. Air Currents Before a detector can sense a fire, the products of combustion or smoke must travel from the fire to the detector. This travel is especially influenced by air currents; therefore, consider air movement when designing the system. While combustion products tend to rise, drafts from hallways, air diffusers, fans, etc., may help or hinder the travel of combustion products to the detector. When positioning a detector at a particular location, give consideration to windows and doors, both open and closed, to ventilating systems, both in and out of operation, and to other factors influencing air movement. Do not install a detector in the air stream of a room air supply diffuser. It is better to position a detector closer to an air return. The distance that products of combustion or smoke travel from a fire to the detector is not usually the shortest linear route. Combustion products or smoke usually rise to the ceiling, then spread out. Average ceiling heights of 8 to 10 feet do not abnormally affect detector response. High ceilings, located in churches, warehouses, auditoriums, etc., do affect detector response and should be considered.