{"product_id":"pbr-1191-siemens-conventional-linear-beam-smoke-detector-with-retroreflecting-prism","title":"PBR-1191 | Siemens Conventional Linear Beam Smoke Detector with Retroreflecting Prism","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Siemens PBR-1191 is a conventional linear beam smoke detector with a retroreflecting prism designed to ensure reliable smoke detection in open and high-ceiling environments. Its prism structure reflects incident light beams back along their path, providing consistent performance in beam detection systems. The device connects to a 24V supply and incorporates a reflector heater for reliable operation in areas prone to condensation.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFire Safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePBR-1191\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFire Alarm Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConventional linear beam smoke detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRetroreflecting prism with isosceles orthogonal triangle faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Path\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble reflection of beams back to source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIdentical to detector base for easy integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V supply connection for condensation control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLarge open areas, warehouses, atriums, industrial buildings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVibration Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDesigned to minimize effects of structural movement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduction Status\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eActive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUnit of Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEach (EA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7 × 7 × 6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 lbs (approx. 0.68 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 \u003cmeta charset=\"utf-8\"\u003e \u003cspan data-sheets-root=\"1\"\u003ePBR-1191\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe PBR-1191 is part of Siemens’ fire safety product line and is specifically engineered for use with beam smoke detection systems. It features a prism reflector with lateral faces formed by isosceles orthogonal triangles, ensuring precise double reflection of incoming light beams. The reflector housing is identical to the detector base, allowing straightforward installation and system integration. With its built-in heater option, the PBR-1191 maintains accuracy and functionality even in challenging environments with high humidity or condensation risks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetroreflecting prism design: Returns light beams back along their path for accurate smoke detection.\u003c\/li\u003e\n\u003cli\u003eIsosceles orthogonal structure: Double reflection ensures consistent optical performance.\u003c\/li\u003e\n\u003cli\u003eReflector housing: Built with the same base structure as the detector for simplified installation.\u003c\/li\u003e\n\u003cli\u003eHeater integration: Equipped with a 24V heater connection to prevent condensation interference.\u003c\/li\u003e\n\u003cli\u003eDurable construction: Designed to withstand structural vibration and movement.\u003c\/li\u003e\n\u003cli\u003eWide application use: Suitable for open areas, warehouses, and high-ceiling facilities.\u003c\/li\u003e\n\u003cli\u003eActive system support: Functions as a core component of Siemens beam smoke detection systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe PBR-1191 delivers the reliability and precision required for effective beam smoke detection in demanding fire safety applications.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":49105177379072,"sku":"PBR-1191","price":1462.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/PBR-1191.jpg?v=1785541933","url":"https:\/\/alotechparts.com\/products\/pbr-1191-siemens-conventional-linear-beam-smoke-detector-with-retroreflecting-prism","provider":"Alo Tech Solutions","version":"1.0","type":"link"}