Siemens HI921 Intelligent Heat Detector
The Siemens HI921 Intelligent Heat Detector is a two-wire addressable Heat Detector that features seven (7) field-selectable temperature-range settings: 135°F (57°C) - 174°F (79°C) with fixed and rate-of-rise programmability.
Programable with Siemens DPU Device Programmer / Loop Tester and compatible for use with Siemens Model ‘H’-series devices on the same loop with Cerberus PRO fire-alarm control panels or FireFinder XLS FACPs.