{"product_id":"siemens-hi121","title":"Siemens HI121 Replacement Part","description":"\u003cp\u003eSiemens HI121 addressable heat detector head for fire alarm system installations.\u003c\/p\u003e\n\u003ch3\u003eCompliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUL 521\u003c\/li\u003e\n\u003cli\u003eULC S530\u003c\/li\u003e\n\u003cli\u003eCSFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAddressable heat detector head with alarm current of 50 mA for Siemens SLC integration\u003c\/li\u003e\n\u003cli\u003eOperating temperature range 32–100°F (0–38°C) for standard commercial and institutional occupancies\u003c\/li\u003e\n\u003cli\u003eVelocity range 0–4,000 fpm and humidity 0–95% for typical building environments\u003c\/li\u003e\n\u003cli\u003eUL 521 listed for heat detection and ULC S530 listed for Canadian market applications\u003c\/li\u003e\n\u003cli\u003eMounts on standard Siemens detector bases compatible with Cerberus PRO and FireFinder XLS systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI121 is a Siemens addressable heat detector head used in commercial fire alarm installations on Cerberus PRO and FireFinder XLS platforms. It provides thermal detection where smoke detectors are not suitable, such as in high-particulate or high-humidity environments. With UL 521 and ULC S530 listings, the HI121 meets detection standards for both US and Canadian fire safety codes. It mounts on DB-series bases and communicates alarm and supervisory status via the signal line circuit.\u003c\/p\u003e\n\u003cp\u003eVerify panel\/device family compatibility before ordering.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52004364681509,"sku":"HI121","price":64.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7648\/4645\/files\/siemens-heat-detectors-default-title-siemens-hi121-s54372-f3-a1-thermal-fire-detector-31896956633312.jpg?v=1771296172","url":"https:\/\/fastalarmdistribution.com\/products\/siemens-hi121","provider":"Fast Alarm Distribution","version":"1.0","type":"link"}