Furthermore, each Model HI921 detector has seven (7) pre-programmed parameter sets that can be select by the Siemens FACP.

This feature − along with a compatible FACP (Cerberus PRO Modular | FireFinder XLS/V or with Cerberus PRO FC/FV922 or FC/FV924 FACPs) − serves as prevention of water freezing in pipes for sprinkler systems, meeting NFPA 72 Model HI921 also utilizes a modern accurate and shock-resistant thermistor to sense significant changes in temperature. This variance provides the customer with maximum flexibility to program the temperature settings to suit multiple application needs and changing environmental conditions.īesides, model HI921 can be configure to provide a low-temperature warning signal at 40☏ (4.4☌). The temperature-range settings for each Model HI921 detector is between 135☏ (57☌) ─ 174☏ (79☌) with fixed and rate-of-rise programmability. In general, each Siemens HI921 is a cost-effective, intelligent, addressable thermal detector that provides distinctive, advanced features: seven (7) field-selectable temperature settings specially tailored for application-specific detection needs to be combine with Class-X SLC operation built-in avoiding additional installation and material cost. Additionally, Each Model HI921 unit is UL list including advance built-in ISOtechnology™ – a “True Class-X” SLC operation greatly improving system reliability and circuit integrity while providing advanced addressable fault finding. Also, the Siemens HI921 uses a state-of-the-art thermistor, microprocessor, and advanced signal analysis, providing high reliability and accuracy.

The Siemens HI921 Intelligent Heat Detector provides an advanced method of detection, address programming supervision─combined with sophisticated FACP communication.

Cerberus pro facp