Conventional Heat Detector
All of the Sentek's HD912 series detectors meet the requirements of UL521 and EN 54-5 for use in fire 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.
Response Temperature:
57°C (135°F)
Ceiling Spacing:
50 foot rating for heat sensor
Reset Voltage:
less than 1 volt
Alarm Indicator:
LED continuously emitting red light
Remote Output:
25 mA max., diode gate
Temperature Range:
-10°C to 50°C
Permissible Current:
80mA maximum
Humidity:
0 to 95% RH, no condensation or icing
Alarm Contact:
(for 4-wire) NO or NC Operation, Form A: 1.0A@30VDC/0.5A@125VAC
Dimensions:
100mm (dia) x 46mm (ht) with base
Weight:
120g/set with base
Product Features:2 or 4 wire modelsAdvanced detection and discrimination algorithmsEasy installation and maintenanceSleek low-profile housing designDurable sensor head, no need for replacement SMD circuit board design-satisfactory quality and reliability guaranteedN/C (normal/close)-N/O (normal/open)selectable relay outputAR (Auto Reset) function for security systems (optional for 4 wire models) Sensor base option: standard and Shottky DiodeFive-year limited warranty
The range includes:
HD912-2 2 wire heat alarm
HD912-2L 2 wire heat alarm with remote LED output
HD912-4 4 wire heat alarm (12/24VDC)
HD912-4B 4 wire heat alarm with buzzer (12/24VDC)
HD912-4AR 4 wire heat alarm with auto-reset function (12/24VDC)
HD912-4ARB 4 wire heat alarm with auto-reset function and buzzer (12/24VDC)