HD951 Heat Detector

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HD951 Heat Detector

Our HD951 heat detector features an advanced detection and discrimination algorithms. Besides, our detector also provides you an easy installation and maintenance. The durable sensor head makes you to worry no more for replacement. Meanwhile the SMD circuit board is designed to satisfy quality and reliability. It meets the requirements of UL521 and EN 54-5. Our heat detector provides fast and reliable response for heat over 57°C (135°F) or rate-of-rise detection.

The heat detector includes 2-wire and 4-wire models, while it is subject to panel compatibility limits and compliance with corresponding NFPA 72E standards, local codes, and ordinances. Our product provides N/C (normal/close)-N/O (normal/open) selectable relay output, while Auto Reset function is also offered for security systems. We also provide a five-year limited warranty to our products.

Models

HD951-2	2 wire heat alarm
HD951-2L	2 wire heat alarm with remote LED output
HD951-4	4 wire heat alarm (12/24VDC)
HD951-4B	4 wire heat alarm with buzzer (12/24VDC)
HD951-4AR	4 wire heat alarm with auto-reset function (12/24VDC)
HD951-4ARB	4 wire heat alarm with auto-reset function and buzzer (12/24VDC)

Technical Specifications

Model	2/4 wire	Voltage DC(Min./Max.)	Standby Current (Max.)	Alarm Current (12/24V)	Surge Current (Max.)	Start-Up Time (Max.)	Max. Current	Cycle Time	Alarm contact	Certified	Base Model No.
HD951-2	2	10~33V	45µA	50mA	100µA	30 Seconds	80mA	1-3 Seconds	—	CE	P/N762001
HD951-2L	2	10~33V	45µA	50mA	100µA	30 Seconds	80mA	1-3 Seconds	—	CE	P/N764001
HD951-4-12/24	4	12/24V	45µA	30mA	100µA	30 Seconds	—	1- 3Seconds	Form A	CE	P/N764001
HD951-4AR-12/24	4	12/24V	45µA	30mA	100µA	30 Seconds	—	1-3 Seconds	Form A Auto Reset	CE	P/N764001
HD951-4ARB-12/24	4	12/24V	45µA	30mA	100µA	30 Seconds	—	1-3 Seconds	Form A Auto Reset	CE	P/N764001
HD951-4B-12/24	4	12/24V	45µA	30mA	100µA	30 Seconds	—	1- 3Seconds	Form A	CE	P/N764001

Detailed Information

Response Temperature	135°F(57°C) or 15°F(9.3°C)/min Rate-of-Rise
Monitoring Spacing	40 feet*40 feet
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
Max. 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
Dimension	102mm(dia.) x 43mm (ht) with base
Weight	125g/set with base