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Ningbo Sentek Electronics Co., Ltd.

Heat Detector, Alarm System, Security Systems manufacturer / supplier in China, offering UL/CE/En Approved Heat Detector, Tamper Switch Alarm, UL Recessed Mounted Magnetic Contact Switch and so on.

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UL/CE/En Approved Heat Detector

FOB Price: US $4.99 / Piece
Min. Order: 100 Pieces
Min. Order FOB Price
100 Pieces US $4.99/ Piece
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Production Capacity: 100000PCS/Month
Transport Package: 100PCS/Carton
Payment Terms: T/T, Paypal

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Basic Info
  • Model NO.: HD912
  • Application: Indoor
  • Approved: CE/En/UL
  • Specification: CE/EN/UL
  • HS Code: 8531100000
  • Certification: CE, RoHS, UL/En
  • Usage: Fire, Smoke, Heat
  • Trademark: SENTEK
  • Origin: Ningbo China
Product Description
UL/CE/EN approved conventional heat detector 
ALL of the Sentek's HD912 series detectors meet the requirements of UL521 and EN54-5 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 subjest to panel compatibility limits and compliance with corresponding NFPA72E standards,local codes,and ordinances.
UL/CE/En Approved Heat Detector


Product Features:

.2 or 4 wire modles

.Advanced detection and discrimination algorithms

.Easy installation and maintenance

.Sleek low-profile housing design

.Durable sensor head , no need to replacement

.SMD circuit board design satisfactory quality and reliability guaranteed

.N/C (normal/closed)- N/O(normal/open) selectable relay output

.AR (Auto Reset)function for security systems (optional for 4 wire models)Sensor base option:standars and Shottky Diode

.Five years 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)
UL/CE/En Approved Heat Detector
Product Data:

Response Temperature:

Fixed termperature:57°C (135°F) or Rate-of-Rise

Ceiling Spacing:

40-50 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


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


100mm (dia) x 46mm (ht) with base


120g/set with base


UL/CE/En Approved Heat Detector


Sentek Electronics Co.,Ltd is specializing in designing,developing and manufacturing fire and security detectors and magnetic contacts from 2001.Take quality as life of corporation ,our products are all designed and manufactured completely according to the standard of EN,UL,KFI and so on .All our products are tested one by one in sensitivity and function features.So we enjoyed a good reputation in the world!

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