{"product_id":"hochiki-spb-24n-beam-smoke-detector-responsive-support","title":"Hochiki SPB-24N Projected Photoelectric Beam Smoke Detector 24 VDC for Large Open Areas","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"19\" data-end=\"508\"\u003eThe Hochiki SPB-24N is a projected photoelectric beam smoke detector designed to provide reliable smoke detection across large open areas where conventional spot detectors are impractical. Operating from a 24 VDC supply, it consists of an emitter and receiver that continuously monitor an infrared beam for smoke obscuration. The SPB-24N has been discontinued and replaced by the Hochiki SPC-24 beam detector.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 323.501px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eHochiki\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eFire Alarm Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eSPB-24N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eProjected Beam Smoke Detectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetector Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003ePhotoelectric Projected Beam Smoke Detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eRated Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e19–33 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eSupervisory Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e250 µA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eAlarm Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e20 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eTrouble Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e20 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 10px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 10px;\"\u003e32°F to 122°F (0°C to 50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eSensitivity Test\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eManufacturer's Test Filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e5.5 in H × 3.2 in W × 4.0 in D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eWall Mount or Single-Gang Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eReplacement Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003eHochiki SPC-24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.2705%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.5102%; height: 19.5938px;\"\u003e1.2 lb (0.54 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eSPB-24N\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp data-start=\"503\" data-end=\"1065\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe SPB-24N is a conventional projected beam smoke detector manufactured by Hochiki for commercial and industrial fire alarm systems. It utilizes near-infrared photoelectric beam technology and a microprocessor-controlled receiver to detect smoke over long distances while automatically compensating for signal drift caused by dust or environmental changes. The detector features adjustable sensitivity settings, LED alignment indicators, and wall or single-gang box mounting for simplified installation. Although discontinued, the SPB-24N remains compatible with many existing fire alarm systems and has been superseded by the Hochiki SPC-24.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"1085\" data-end=\"1102\"\u003eKey Features:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1341\" data-end=\"2149\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1163\" data-end=\"1902\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1105\" data-end=\"1885\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1126\" data-end=\"1911\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1221\" data-end=\"1962\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1145\" data-end=\"1838\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1060\" data-end=\"1738\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1152\" data-end=\"1867\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1139\" data-end=\"1929\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1227\" data-end=\"1992\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1152\" data-end=\"1948\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1061\" data-end=\"1796\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1039\" data-end=\"1802\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1075\" data-end=\"1785\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1131\" data-end=\"1905\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1130\" data-end=\"1817\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1161\" data-end=\"1924\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1083\" data-end=\"1733\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1195\" data-end=\"1934\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1052\" data-end=\"1790\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1246\" data-end=\"1963\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1165\" data-end=\"1867\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1108\" data-end=\"1844\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1217\" data-end=\"1850\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1291\" data-end=\"1957\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1897\" data-start=\"1154\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1830\" data-start=\"1150\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1854\" data-start=\"1180\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1924\" data-start=\"1213\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1876\" data-start=\"1163\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1952\" data-start=\"1278\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1951\" data-start=\"1239\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1954\" data-start=\"1269\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1931\" data-start=\"1230\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1830\" data-start=\"1181\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1832\" data-start=\"1151\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1886\" data-start=\"1192\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1717\" data-start=\"1097\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1849\" data-start=\"1211\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1910\" data-start=\"1207\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1728\" data-start=\"1135\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1876\" data-start=\"1265\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1789\" data-start=\"1124\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1848\" data-start=\"1151\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1728\" data-start=\"1107\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1841\" data-start=\"1152\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1981\" data-start=\"1317\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"2199\" data-start=\"1315\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1853\" data-start=\"1099\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1900\" data-start=\"1262\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1933\" data-start=\"1220\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1894\" data-start=\"1200\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1923\" data-start=\"1096\"\u003e\u003c\/ul\u003e\n\u003cul data-end=\"1894\" data-start=\"1175\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1337\" data-end=\"2268\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1164\" data-end=\"1929\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"995\" data-end=\"1753\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1211\" data-end=\"1882\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"984\" data-end=\"1577\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1110\" data-end=\"1875\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1142\" data-end=\"1905\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1200\" data-end=\"1974\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1131\" data-end=\"1869\"\u003e\u003c\/ul\u003e\n\u003cul data-start=\"1196\" data-end=\"1951\"\u003e\n\u003cli data-section-id=\"8xyz1\" data-start=\"1196\" data-end=\"1295\"\u003ePhotoelectric Beam Detection: Uses an infrared beam to detect smoke across large protected areas.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"unttlf\" data-start=\"1296\" data-end=\"1416\"\u003eMicroprocessor Control: Provides stable operation with automatic compensation for signal drift and lens contamination.\u003c\/li\u003e\n\u003cli data-section-id=\"1ylemsk\" data-start=\"1417\" data-end=\"1516\"\u003eAdjustable Sensitivity: Supports 25%, 50%, and 70% obscuration settings for various applications.\u003c\/li\u003e\n\u003cli data-section-id=\"120trcf\" data-start=\"1517\" data-end=\"1597\"\u003eLow Standby Current: Draws only 250 µA during supervisory operation at 24 VDC.\u003c\/li\u003e\n\u003cli data-section-id=\"47f8g4\" data-start=\"1598\" data-end=\"1669\"\u003eLED Alignment Indicators: Simplifies installation and beam alignment.\u003c\/li\u003e\n\u003cli data-section-id=\"qwyqbh\" data-start=\"1670\" data-end=\"1758\"\u003eFlexible Mounting: Installs directly on a wall or standard single-gang electrical box.\u003c\/li\u003e\n\u003cli data-section-id=\"1q1jhuk\" data-start=\"1759\" data-end=\"1874\"\u003eLong-Range Coverage: Designed to protect spaces with beam distances from approximately 32.8 to 328 ft (10–100 m).\u003c\/li\u003e\n\u003cli data-section-id=\"1j570i6\" data-start=\"1875\" data-end=\"1951\"\u003eReplacement Model: Replaced by the Hochiki SPC-24 projected beam detector.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1953\" data-end=\"2097\"\u003eThe SPB-24N delivers the reliability and precision required for long-range smoke detection in commercial and industrial fire protection systems.\u003c\/p\u003e","brand":"HOCHIKI","offers":[{"title":"Default Title","offer_id":52035221782826,"sku":"SPB-24N","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_fc6eac34-f7c8-4a49-9d37-3c1ab9e01b66.webp?v=1783086378","url":"https:\/\/iqelectro.com\/products\/hochiki-spb-24n-beam-smoke-detector-responsive-support","provider":"IQElectro","version":"1.0","type":"link"}