All of the Sentek’s HD912 series detectors meet the requirements of UL521 and EN 54-5 for use in Þ re alarm signaling systems, which provide fast and reliable response for heat 57°C (135°F) or Rate-of-Rise detection, They are intended for use in 2-wire/4-wire Class A2 supervised zone circuits. The HD912 series detectors are subject to panel compatibility limits and compliance with corresponding NFPA 72E standards, local codes, and ordinances.

FEATURES:

•  2 or 4 wire models
• Advanced detection and discrimination algorithms
• Easy installation and maintenance
• Sleek low-profile housing design
• Durable sensor head, no need for replacement
• SMD circuit board design-satisfactory quality and reliability guaranteed
• N/C (normal/close)-N/O (normal/open) selectable relay output
• AR (Auto Reset) function for security systems (optional for 4 wire models) Sensor base option: standard and Shottky Diode
• Five-year limited warranty