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HD912 CE UL Approved Conventional Heat Detector Fire Alarms for Use in Fire Alarm Signaling Systems

• 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
  • HD-912
  • Sentek


HD912 Series

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.

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)


Product  Specification


Model  

2/4 wire

Voltage DC

Standby

Current

(Max.)

Alarm

Current

(Max.)

Surge

Current

(Max.)

Star-Up

Time

(Max.)

Permissible

Current

(Max.)

Frequency  Alarm contact Base model

HD912-2  

2

10~33V  45μA  50mA  100μA   30 Seconds 80mA   1-3 Seconds   P/N852001

HD912-2L  

2

10~33V  45μA  50mA   100μA   30 Seconds 80mA   1-3 Seconds   P/N854001

HD912-4

4

12/24V  45μA  30mA   100μA   30 Seconds —  1-3 Seconds   Form A   P/N854001

HD912-4-AR

4

12/24V  45μA  30mA  100μA  30 Seconds —  1-3 Seconds   Form A /Auto Reset  P/N854001

HD912-4-ARB  

4

12/24V  45μA  30mA  100μA  30 Seconds —  1-3 Seconds   Form A /Auto Reset  P/N854001


Product Data


Response Temperature

Fixed termperature: 57°C (135°F)

Rate-of-Rise: CLASS 2 (EN54-5); or 8°C/Min (UL521)

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


Certificate


证书


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CONTACT US

 +86 574 87155635, 87153117

 # 8108 or 8817

 +86 180-5855-7012

sales@sentek.cc , service@sentek.cc

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