HD912-4B
Heat Detector
Active
Fixed Temperature Detector
Point Control Alarm Detectors
Common Detectors
Heat Sensor
Heat
Ceiling
Sentek
box/certon
UL and EN54
China
85311000
Product Description
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 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
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)
