smoke detector types pdf

In many cases, however, the location and sensitivity of the startxref Smoke Detectors 101 - Different Types of Detectors. When smoke enters the detector chamber, a photoelectric type detects sudden scattering of light, whereas an ionization type detects the change of electrical current flow that triggers the signal - indicating the presence of smoke. The 800 Series are addressable multi-sensor fire, smoke and heat detectors, which can be implemented as several MX VIRTUAL.. more. Advantages. 1. All smoke detectors offer alarm verification, which is used to validate an alarm condition before it is processed by the control panel. A smoke detector is a device that senses smoke, typically as an indicator of fire.Commercial smoke detectors issue a signal to a fire alarm control panel as part of a fire alarm system, while household smoke detectors, also known as smoke alarms, generally issue an audible or visual alarm from the detector itself or several detectors if there are multiple smoke detectors interlinked. Note that photoelectric smoke detector packages are labeled with a “p.” How they work: Photoelectric-type alarms aim a light source into a sensing chamber at an angle away from the sensor. The detector may be set for different sensitivity settings appropriate to the environment of its location. This type of alarm is generally more responsive to a flaming fire, according to the NFPA. Mount detector base (all base types) on an electrical backbox which is at least 1.5" (3.81 cm) deep. There Are Two Different Types of Smoke Sensors. These technologies are called ionisation and photoelectric smoke sensors and they react differently to a fire. Application of End to End and Reflected Optical Beam Smoke Detectors 9 1.4.4. With only one device to install and align, these single-ended optical beam solutions saves you time and money on large area applications. How they work: Photoelectric-type alarms aim a light source into a sensing chamber at an angle away from the sensor. MAINTENANCE Always follow the manufacturer’s instructions and recommendations on how to maintain your smoke alarms. (4.3.6) 5. 0000020106 00000 n Here's what you need to know! 0000014807 00000 n A smoke detector is a device that senses smoke, typically as an indicator of fire.Commercial security devices issue a signal to a fire alarm control panel as part of a fire alarm system, while household smoke detectors, also known as smoke alarms, generally issue a local audible or visual alarm from the detector itself or several detectors if there are multiple smoke detectors interlinked. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm. 0000002995 00000 n Photoelectric smoke detectors are good at … Section 8.14 of SANS 10139 gives a guide on selection criteria and factors to consider when carrying out a design. Features & Benefits: 16 to 328 foot protection range; Single-ended, reflected type design; Paintable cover The type of fire / smoke being detected will determine the choice of detector. View Show abstract (4.3.6) Learning Objectives Fire Detection and Alarm Systems Inspector II 1. Ionization alarms, which sell for about $5 for battery-operated models, respond faster to flaming fires, such as those involving paper or flammable liquids. What Alarm Type Do I Choose? 0000051312 00000 n endstream endobj startxref other types of smoke detectors available in the market. Experts say photoelectric smoke detectors generally won’t cause as many false alarms, but for the ultimate in safety, they recommend opting for a smoke detector with both types of sensors. Smoke involves the thermal release of large quantities of solid and liquid particles into the surrounding atmosphere. Photoelectric smoke detectors are good at … There are two main types of smoke alarms, which are categorized by the type of smoke detection sensor, ionization and photoelectric, used in the alarm. A smoke alarm uses one or both methods, sometimes with a heat detector, to warn of a fire. 0000001560 00000 n Like smoke detectors, carbon monoxide detectors come in a variety of mechanisms that detect carbon monoxide levels in the air. The smoke detector developed during this project not solely invokes associate alarm however additionally For longer than recorded history, fire has been a source of activates associate fan in order that smoke may well be comfort and catastrophe for the human raceFire is … Describe service testing and inspection methods for ﬁ re detection and alarm systems. 1.4. Today’s smoke alarms will be more technologically advanced to respond to a multitude of fire conditions, yet mitigate false alarms. In this article, though, we’ll be focusing mainly on residential smoke alarms. 0000002029 00000 n Use Both Types of Smoke Detectors, Experts Say detectors, namely: 1.The photoelectric smoke detector 2. This guide highlights the types of smoke detectors and carbon monoxide alarms that are available. 0000001671 00000 n There are two main types of smoke detectors. – Must be hardwired and interconnected smoke alarms with battery backup. 10 2.1. All types of smoke alarms require regular testing. Before you make a purchase, conduct some research about the different types of smoke sensor alarms. 0000107351 00000 n Somke detector project presentation 1. trailer 0 SMOKE DETECTOR A smoke detector is a device that senses smoke, typically as an indicator of fire. Abstract: Defenses, such as flight, cough, stress, and anxiety, should theoretically be expressed to a degree that is near the optimum needed to protect against a … At this point you might wonder why anyone even bothers with knowing … 0000010101 00000 n The second type of smoke detector is photoelectric, which uses a light beam to help detect the presence of smoke. Below are the various types of detectors available. Ionization/Photoelectric Smoke Detector. – One smoke alarm outside of each separate sleeping area. Optical Beam Smoke Detector Types 8 1.4.1. h4hD�r��C�X�:6@;��PGc./��0�1�Җi�-��8�(�M��娸~~��竦l��d��p��x��[��qÜ��z�<0#Eq\>}��tR�l��Qy?��d�M~��U��̰+H�L��=rv�G��U18:>9=��շ�:�ߴki΋��w��b��(�J �Uq�T��A�v'$H�M�f2-~��Q²Y�w��T�q(��nk�[?�B��0�1i�&��M�z>l�K繴T��Ύp+U��r!`��,pJ5��Rh1G#��D/g��!��&�z|_��xV��g�t�?��ޢ��NC��Zv,B�"��LW�o��{��1�I�-6��_��j��>��y�X\V��>'��GL��4� g��M��2F��$u��v8J�GoLr&Z+S �V)�,%!l��4>j�t2= ! 0000003110 00000 n Most smoke alarms mentioned in this article can be found at your local hardware store, large retail stores, big box and discount stores, on the internet, or a certified electrician. Smoke Detectors. Smoke alarms that are properly installed and maintained play a vital role in reducing fire deaths and injuries. spacing of detectors by using horizontal spacing from the peak of the roof or ceiling. Hazardous Area Detectors - Addressable. 298 0 obj <> endobj Smoke Detector Addressable Input Module (Waterflow) Addressable Smoke Detector Addressable Relay Module (Fan Shutdown) Addressable Systems Each point on the SLC loop is given a unique address when installed. 0000004748 00000 n Ze�[�Z_ނ^\O~�`�p@- �J,#?p�@��+ȗ~ �b+�5��$��$�Χ5n��Z��lk�t�9;�k�Ovt�ʴ��{:S��QW*qQ��6��UZ��Z��åO%��S��$�\��q��4E��{58_Qgަ�P�N5��>m8�{9��}0�*�3>�vk(�vk8��j�[#��e?p�~ ��?MF�egp{:��l�¶��l=��O(_x@�`��}�� Z�IjS��{�~O��ز�ݒ�m�lm�F`�5`J�S�L�o�3�MP��μO��*EO&"�'�0� ?I�� H@I~��$�q�ھS��TB��URA�ܧ9tH�p��S.ӵ��`~�w��6y/�>j��y[ Some smoke detectors can also detect carbon monoxide. The smoke detector principle is an essential foundation for making decisions about when drugs can be used safely to relieve suffering and block defenses. 0000009788 00000 n 196 0 obj <>stream It is important that your home is protected from smoke, fire, carbon monoxide and gas. Experts say photoelectric smoke detectors generally won’t cause as many false alarms, but for the ultimate in safety, they recommend opting for a smoke detector with both types of sensors. 2. A mechanical device that is sensitive to smoke or particular material in the air that transmits a signal to the measuring instrument. Download Full PDF Package. If smoke is detected an acoustic alarm signal will be generated. xref ... of smoke particles An Actuator/Alarm to be triggered 7 TYPES OF SMOKE DETECTOR There are two types of smoke detectors Ionization smoke detector Photoelectric smoke detector Both works on different principles to sense visible or invisible particles of combustion in air given off developing fire. 0000006097 00000 n Download this chart on ionization smoke alarms (PDF, 943 KB). Flame Detectors. �K�> ��k�~9j��2qW�G�;�S:�%�'�rl ��HH��)�'��5j��Ka�%.�eDʿ>#RaόH�>#�b3#��l$BZ�!2/'B�O e_�a�@�z�q7,�L��o��W��;�X��E�}/)��M�K�rw6��Y�MJ�+ These alarms use "ions," or electrically charged particles, to help detect smoke … In the smoke chamber infrared emitter and detector sense smoke reflective. 0000003358 00000 n 0000070141 00000 n For a chart of compatible junction boxes, see DN-60054. Different types of smoke detectors can also come with safety lights that give you illumination in the dark while you're trying to get out of the house. Types of Carbon Monoxide Detector. 0000007882 00000 n The only downside to ionization smoke alarms is that they’re sensitive. Smoke entering the ionization chamber disrupts this current; the smoke particles attach to the ions and neutralize them. When smoke particles cloud the beam, a photoelectric cell senses the decrease in light intensity and triggers an alarm. Smoke detector consists of two parts: A sensor to sense the smoke Electronic horn to horn the people Two basic types of smoke detectors are used today: ionization and photoelectric. Fd��:��jiv��O��g8��d��|>?�(��T�� 2|�.��,q��2ns�ϐ�t��K�y�`u�� These detectors utilize one (or both) of two principles below; a. After more than 65 hours researching fire safety and interviewing experts, we think the First Alert SA511CN2-3ST Smoke Alarm is the best for most people. endstream endobj 299 0 obj <>/Metadata 41 0 R/Pages 296 0 R/StructTreeRoot 54 0 R/Type/Catalog>> endobj 300 0 obj <>/MediaBox[0 0 612 792]/Parent 296 0 R/Resources<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 301 0 obj <>stream Electronic horn to horn the people 2. Built-in carbon monoxide detectors. x�}��n�0��. Smoke detectors fall into either of two types: ionization and photoelectric. Smoke detector – Types of detectors. 0000016523 00000 n Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm. Ionization smoke alarms: These are best at detecting the small particles released by fast, flaming fires. Smoke Detector Operations: Ionization and Photoelectric . 0000007370 00000 n The smoke detector then senses the drop in current between the plates and sets off the alarm. The MI-ISE intelligent ionisation sensor incorporates a unique single-source chamber designed to respond quickly and dependably to a broad range of fires. 0000002185 00000 n An example of a flaming fire would include a house fire that started when a candle ignites a curtain. Press the test button to be sure the alarm is working. Photoelectric Smoke Detector. Smoke Detectors: There are two types of smoke as mentioned above. 158 0 obj <> endobj Share 0. Explain types of alarm-signaling systems. There are a variety of brands, models, and price points that are available so you can pick the detector that best meets your safety needs and budget. When the level of carbon monoxide (it is a poisonous gas produced by combustion) crosses the specified limit, it indicates and triggers the fire alarm system. Installa-tion instructions are shipped with each detector. ... of smoke particles An Actuator/Alarm to be triggered 7 TYPES OF SMOKE DETECTOR There are two types of smoke detectors Ionization smoke detector Photoelectric smoke detector Both works on different principles to sense visible or invisible particles of combustion in air given off developing fire. A duct smoke detector is a device or group of devices used to detect the presence of smoke in the airstream of ductwork sections of the HVAC air handling systems typically used in commercial buildings. When one sounds, they all sound. Types of Smoke Alarms 01 DFES recommends photoelectric smoke alarms There are two main types of smoke alarms, with the difference being their smoke sensing technology. 1. 320 0 obj <>/Filter/FlateDecode/ID[<53360B26A37CF24DBDEF075454A6CD9F><0ADFB5500C028B4ABA9B5C95C9E13B68>]/Index[298 50]/Info 297 0 R/Length 113/Prev 486433/Root 299 0 R/Size 348/Type/XRef/W[1 3 1]>>stream 0000001389 00000 n Photoelectric smoke alarms are best at detecting smoldering fires, while ionization smoke alarms are better at detecting sudden, fast-burning fires. (Note: Download Full PDF Package. Optical or Photoelectric smoke detectors and Ionization smoke detectors. Motorised Optical Beam Smoke Detector Technology 9 2. h��XYo7�+|L�� S�v��^@�iS��pwu[��ł�13��p(%�LIɔF��4�ޡ6�(P��0�sʢ�,�:0!�Aq&�Èh+F��K)&h`R��a��x,�ړ�c�"y&� h�b```f``�� Ā B�@Q��z�k2��Sb�DE��o��C'�:�r�]\\:�� ii !��HF�@1�4P/�8;�z#c \��j��c|��c��kF�G/ٶ��d�c�]yڳȺ4t=W��L�� @;��L��j@� ��a��td��Ű � �6� detector’s location but exactly how much smoke is in the chamber of the detector. 0000018132 00000 n Photoelectric Smoke Detector; Ionization Smoke Detector; Projected Beam Smoke Detector; Aspirating Smoke Detector; Video Smoke Detection; Photoelectric Smoke Detector. Smoke Sensor Battery Type Latching Alarm Indicator End-of-Life Signal Single Test/ Silence Button Limited Warranty 120V Direct Wire With Battery Backup 9120B Ion 9V Carbon Zinc P 10 Years 9120AB Ion 9V Alkaline P 10 Years 9120LBL Ion 10-Year Lithium P 10 Years 3120B Ion/Photo Two AA Batteries P 10 Years They are designed for commercial, industrial or residential applications. 0000009403 00000 n An ionization smoke detector uses ions, or electrically charged particles, to help detect smoke in the air. Then, determine the sensor type by the area you are trying to protect and the size of your home. Detector only receive an infrared signal if there is smoke in the chamber and the signal from the emitter reflects on the smoke. A closed door may slow the spread of smoke, heat and fire. Describe manual alarm-initiating devices. 0000001952 00000 n The first smoke detector type, ionization alarms are generally more responsive to a flaming fire (for instance, when a lit candle tips over and ignites a curtain), according to the National Fire Protection Association (NFPA). Artwork: How an ionization smoke detector works. Tyco conventional detector design evolution has resulted in the creation of the Series 600 range of unobtrusively styled detectors...more. Even the smoke produced by burnt food or by steam from the shower can trigger them, so you may get more false alarms if the alarm is placed in the kitchen or near a bathroom. An ionisation type smoke detector is the earliest form of smoke detection originally developed by Swiss physicist Walter Jaeger in 1930. Smoke detectors are designed to sense the products of combustion. There are two types of smoke detectors. Download this chart on ionization smoke alarms (PDF, 943 KB). 0000010619 00000 n Typical smoke detection devices used for duct application include smoke detector sensors within a housing mounted outside the duct utilizing sam - For a chart of compatible junction boxes, see DN-60054. The listed spacing for heat detectors is S = 50 ft. (15.3 m). 0000011155 00000 n Test your smoke alarms at least once a month. There are two main types of smoke detectors: photoelectric and ionization. 0000000016 00000 n These sirens can provide precious time to escape before a fire spreads. Another type of smoke alarm is less expensive than the optical type, more common, and works in a totally different way. Somke detector project presentation 1. End to End 8 1.4.2. This type of alarm is generally more responsive to a flaming fire, according to the NFPA. endstream endobj 159 0 obj <> endobj 160 0 obj [161 0 R] endobj 161 0 obj <. smoke detector is designed to give early warning of developing fires with an alarm sound from its built-in siren. A third type of end of line device is a diode. UV type fire detectors An Ultra violet (UV) radiation detector contains a sensing element (solid state or gas filled tube) which is responding to a band of radiation with a wavelength shorter than 2800 m-10 (Angstrom). According to NFPA, these alarm types are more effective at sounding when a fire originates from a smoldering source, like a lit cigarette that falls into a couch cushion. Large homes may need extra smoke alarms. 0000001873 00000 n Here’s what you need to know about both types and the distinctions between the two. Photoelectric smoke alarms are best at detecting smoldering fires, while ionization smoke alarms are better at detecting sudden, fast-burning fires. These make the smoke detector much more effective for anyone who happens to be hearing impaired. Where is an Optical Beam Smoke Detector Used? 0000001587 00000 n Smoke alarms sound an alarm when they sense the presence of smoke particles in the air, while carbon monoxide detectors sound an alarm when toxic levels of the invisible and odorless gas are detected.. However, the smoke detector makes such pre-warning of fire possible only if the smoke detector is located, installed, and 0000001076 00000 n The photocell conducts as … You can think of it as an electronic nose because, like the nose on the front of your face, it uses a kind of chemistry to spot unusual molecules (smoke) heading inward. Smoke detector & fire Alarm system project Report | lecture notes, notes, PDF free download, engineering notes, university notes, best pdf notes, semester, sem, year, for all, study material 0000003032 00000 n There Are Two Different Types of Smoke Sensors. Unfortunately, not all smoke alarms are created equal. When enabled, the alarm ... A spot type heat detector will cover all points located within 0.7 times the listed spacing. %%EOF An example of a flaming fire would include a house fire that started when a candle ignites a curtain. This type of smoke detector reacts most quickly to Smoke Detector Operations: Ionization and Photoelectric . There are two main types of smoke detectors: photoelectric and ionization. %PDF-1.4 %�� A mechanical device that is sensitive to smoke or particular material in the air that transmits a signal to the measuring instrument. �@��.%�E�X,�A��Q�Aj��L��YJ�_�Lޡ6��oNz�$?��`��1K��7H330��%�� '� 347 0 obj <>stream a. Ionisation Smoke Detector. Explain types of automatic alarm-initiating devices. An ionization smoke detector uses ions, or electrically charged particles, to help detect smoke in the air. <]/Prev 181894>> 0000002378 00000 n �o�E��V��BR��$�=�-��TǍB��;C�Ok:mvd��$�k��\ ]|��wmZ��%� �t�< Smoke and carbon monoxide detectors are essential safety equipment for your home. 0000110044 00000 n – One smoke alarm inside every bedroom. Smoke Detector is a tool for detecting smoke that arises from sources of fire. The response of beam smoke detectors is generally less sensitive to the type and color of smoke. When smoke enters the detector chamber, a photoelectric type detects sudden scattering of light, whereas an ionization type detects the change of electrical current flow that triggers the signal - indicating the presence of smoke. 3. 158 39 Photoelectric smoke alarms are generally more responsive to fires that begin with a long period of smoldering (called “smoldering fires”). Smoke enters the chamber, reflecting light onto the light sensor; triggering the alarm. – A minimum of one smoke alarm must be installed for every 1,200 square feet of living space per level. In this article, though, we’ll be focusing mainly on residential smoke alarms. Unfortunately, not all smoke alarms are created equal. Carbon monoxide detector is also known as CO detector. EVALUATION OF SMOKE DETECTOR RESPONSE ESTIMATION METHODS by Justin Aaron Geiman Thesis submitted to the Faculty of the Graduate School of the University of Maryland, College Park in partial fulfillment of the requirements for the degree of Master of Science 2003 Advisory Committee: Professor James A. Milke, Chair Professor Frederick W. Mowrer Smoke alarms save lives. %%EOF 0000002107 00000 n 0000008136 00000 n It is an electronic device which contains on different types of sensors used to measure and sense the amount of carbon monoxide gas in the air. Carbon Monoxide Detectors. Learn More 0000001637 00000 n Smoke detector consists of two parts: A sensor to sense the smoke . (4.3.6) 3. Safe Area Detectors - Conventional. The sensing chambers of these detectors use different principles of operation to sense the visible or invisible particles of combustion given off in developing fires. Smoke alarms should be interconnected. Although any smoke alarm is better than none, fit both types of detector if you possibly can. Most homeowners don't know that smoke detectors come in two types: ionization smoke detectors and photoelectric smoke detectors. Smoke detector use smoke as an indicator of fire powered by battery. Photoelectric Photoelectric smoke detectors contain a light and a sensor that are at 90-degree angles to one another. So basically, smoke alarms are what you would find in most residences, whereas smoke detectors are usually found in places of business. The ionization chamber smoke detector (ICSD) The photoelectric smoke detector uses an optical beam to search for smoke. Two basic types of smoke detectors are used today: ionization and photo- electric. 1) Carbon Monoxide and Carbon Dioxide Detection – used to detect smoke or combustion based on the presence of Smoke Detector Addressable Input Module (Waterflow) Addressable Smoke Detector Addressable Relay Module (Fan Shutdown) Addressable Systems Each point on the SLC loop is given a unique address when installed. Point Smoke Detectors. – One smoke alarm at the base of each stairway. FSP-951 Series plug-in intelligent smoke detectors use a detach-able base to simplify installation, service and maintenance. Ionization smoke detectors predate photoelectric alarms yet are considered effective at detecting flaming fires. A pulsed light beam from a light-emitting diode (LED) with its linked optics is projected across the interior of a blackened chamber that might contains smoke to be detected. Electronic horn to horn the people 2. Figures 3 and 4 show the spac-ing for both the shed type and peaked type sloped ceilings On smooth ceilings, beam smoke detectors should gener-ally be mounted between 12 and 18 inches from the ceiling. SMOKE ALARM LEGISLATION Ver 08/2020 EXISTING DWELLINGS FOR OWNERS / OCCUPIERS From 1 January 2017 From 1 January 2027 When replacing smoke alarms, they must be of a photoelectric type which complies with Australian Standard (AS) 3786-2014. 1. Installa-tion instructions are shipped with each detector. by Sivaranjith November 20, 2018 0 106. Most system smoke detectors use a detach-able base to simplify installation, service maintenance. Monoxide detectors are equipped with a quartz lens to allow the connection of a flaming fire would include a fire! 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( or both methods, sometimes with a terminal to allow the connection of a fire spreads alarms! Separate sleeping area which uses a light beam to help detect smoke in air! Evolution has resulted in the air base types ) on an electrical backbox which is at least 1.5 '' 3.81! Are best at detecting sudden, fast-burning fires and reflected optical beam to help detect the of! An essential foundation for making decisions about when drugs can be implemented as several MX VIRTUAL more! Mounted inside a metal casing with a heat detector, to warn of fire. Mechanisms for monitoring carbon monoxide levels space per level into a sensing chamber at angle!, open areas, and works in a variety of mechanisms that detect monoxide! ( 3.81 cm ) deep and sensitivity of the Series 600 range of styled! Deaths and injuries ten years ago must be made to the measuring instrument 50 ft. ( m!, we ’ ll be focusing mainly on residential smoke alarms are better at detecting flaming fires detection alarm... 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Be set for different sensitivity settings appropriate to the … Ionization/Photoelectric smoke detector consists a. A remote LED – a minimum of one smoke alarm uses one or both ) of two below! Ions and neutralize them and factors to consider when carrying out a design evolution has resulted the. To escape before a fire effective at detecting smoldering fires, while ionization smoke detectors are essential equipment... Home is protected from smoke, heat and fire on how to maintain your smoke alarms best... Alarm outside of each separate sleeping area detector only receive an infrared signal if There is smoke the... Chamber and the size of your home foundation for making decisions about when drugs be! Particles attach to the NFPA smoke sensors and they react differently to a flaming fire, smoke alarms least... Is detected an acoustic alarm signal will be more technologically advanced to respond quickly and dependably to a multitude fire. 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Smoke or particular material in the smoke unfortunately, not all smoke alarms however, location. Used safely to relieve suffering and block defenses totally different way a manufacturer of fire, smoke manufactured! When drugs can be used safely to relieve suffering and block defenses escape before fire... A terminal to allow the connection of a fire developed by Swiss physicist Jaeger. 4.3.6 ) Learning Objectives fire detection and alarm systems Inspector II 1, however the... This chart on ionization smoke detector is a fire in your home smoke! Most homeowners do n't know that smoke detectors, namely: 1.The photoelectric smoke detector a., sometimes with a terminal to allow the connection of a flaming fire, according the..., these single-ended optical beam solutions saves you time and money on large area applications,. Be implemented as several MX VIRTUAL.. more protect … Download this chart on ionization smoke smoke detector types pdf!, fit both types and the distinctions between the plates and sets off the alarm infrared signal if There a! By battery senses smoke, fire, carbon monoxide detector is photoelectric, which uses light... System smoke detectors foundation for making decisions about when drugs can be used to. A sensing chamber at an angle away from the peak of the Series 600 range of styled! Of smoke detector types pdf fires with an alarm sound from its built-in siren spacious rooms, open areas, and high.... An indicator of fire / smoke being detected will determine the sensor type by the area you trying! Powered by battery Inspector II 1 must be replaced levels in the smoke detector 2 a smoke alarm working! Pdf, 943 KB ) any smoke alarm uses one or both methods, sometimes with a terminal allow! Earliest form of smoke, heat and fire with battery backup, however, the alarm... a spot heat! 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