Gold Member Since 2010
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Ningbo Sentek Electronics Co., Ltd.

Heat Detector, 2 or 4 Wires, Heat Alarm manufacturer / supplier in China, offering Conventional Fixed Temperature Relay Output Heat Detector, Tamper Switch Alarm, UL Recessed Mounted Magnetic Contact Switch and so on.

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Conventional Fixed Temperature Relay Output Heat Detector

FOB Price: Get Latest Price
Min. Order: 500 Pieces
Production Capacity: 60000/Month
Transport Package: 1PC/Box, 100PCS/Carton
Payment Terms: T/T, Paypal, Western Union

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Basic Info
  • Model NO.: HD751
  • Usage: Temperature
  • Certification: CE, ISO, RoHS, UL En54
  • Wire: 2 or 4 Wire Heat Detector
  • Ceiling Spacing: 40-50 Foot Rating for Heat Sensor
  • Temperature Range: -10 to 50
  • Dimensions: 100mm (Dia) X 46mm (Ht) with Base
  • Trademark: SENTEK
  • Origin: China Ningbo
  • Type: Heat Detector
  • Installation Mode: Ceiling Mounted
  • Application: Home, Industry
  • Warranty: 5 Year Limted Warranty
  • Alarm Indicator: LED Continuously Emitting Red Light
  • Humidity: 0 to 95% Rh, No Condensation or Icing
  • Weight: 120g/Set with Base
  • Specification: UL, EN54, CE, ROSH
  • HS Code: 8531100000
Product Description

Quick Details
Place of Origin: Zhejiang China (Mainland)Brand Name: SentekModel Number: HD751
Packaging & Delivery
Packaging Detail:1pc/inner box,100pcs/ctn
Delivery Detail:20 days

Conventional Heat Detector
All of the Sentek's HD751 series detectors meet the requirements of UL521 and EN 54-5 for use in fi re 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 HD751 series detectors are subject to panel compatibility limits and compliance with corresponding NFPA 72 standards, localcodes, and ordinances.
Product Features:
2 or 4 wire models
Advanced detection and discrimination algorithms
Easy installation and maintenance
Sleek low-profi le 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:
HD751-2 2 wire heat alarm
HD751-2L 2 wire heat alarm with remote LED output
HD751-4 4 wire heat alarm (12/24VDC)
HD751-4B 4 wire heat alarm with buzzer (12/24VDC)
HD751-4AR 4 wire heat alarm with auto-reset function (12/24VDC)
HD751-4ARB 4 wire heat alarm with auto-reset function and buzzer (12/24VDC)

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:  102mm (dia) x 43mm (ht) with base
  Weight:  125g/set with base

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