Conventional Fixed Temperature Relay Output Heat Detector
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Product Highlights
- UL and EN Compliance: Meets UL521 and EN 54-5 standards for fire alarm signaling systems.
- Flexible Wiring Options: Available in 2-wire or 4-wire Class A2 supervised zone circuits.
- Relay Output Configuration: Selectable N/C or N/O relay output with 1.0A@30VDC capacity.
- Auto-Reset Function: Optional AR function available for 4-wire models in security systems.
- LED Alarm Indicator: Red LED continuously emits light during alarm conditions.
- Five-Year Warranty: Comprehensive five-year limited warranty coverage included.
- Customization Services: OEM and ODM services available with flexible customization options.
Product Attributes
- Customization
- Available
- Type
- Heat Detector
- Usage
- Temperature
- Model NO.
- HD751
- Installation Mode
- Ceiling Mounted
- Certification
- CE, ISO, RoHS, UL En54
- Application
- Home, Industry
- Wire
- 2 or 4 Wire Heat Detector
- Warranty
- 5 Year Limted Warranty
- Ceiling Spacing
- 40-50 Foot Rating for Heat Sensor
- Alarm Indicator
- LED Continuously Emitting Red Light
- Temperature Range
- -10 to 50
- Humidity
- 0 to 95% Rh, No Condensation or Icing
- Dimensions
- 100mm (Dia) X 46mm (Ht) with Base
- Weight
- 120g/Set with Base
- Transport Package
- 1PC/Box, 100PCS/Carton
- Specification
- UL, EN54, CE, ROSH
- Trademark
- SENTEK
- Origin
- China Ningbo
- HS Code
- 8531100000
- Production Capacity
- 60000/Month
Product Images of Conventional Fixed Temperature Relay Output Heat Detector
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Conventional Fixed Temperature Relay Output Heat Detector -
Conventional Fixed Temperature Relay Output Heat Detector -
Conventional Fixed Temperature Relay Output Heat Detector -
Conventional Fixed Temperature Relay Output Heat Detector -
Conventional Fixed Temperature Relay Output Heat Detector -
Conventional Fixed Temperature Relay Output Heat Detector
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Product Description
Conventional Fixed Temperature Relay Output 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.
Specification:
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 |
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)
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Company Information
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR2531332". Items marked "
" are certified.
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Company Profile
Ningbo Sentek Electronics Co., Ltd. Was founded in November 2005, is located in the beautiful port city of Ningbo, the factory covers an area of more than 10, 000 square meters, is a commitment to research and development and production of security and fire alarm, smart home equipment, proximity sensors and other products as one of the high-tech enterprises.
The company has its own excellent development and management team, with more than 30 management personnel; More than 10 technical engineers, engaged in security and fire alarm product design for many years, has a strong development ability, can meet the different needs of customers.
The company has a very strong production capacity; Monthly production of fire alarms 150, 000, door magnetic switch 350, 000 sets. It has a variety of advanced production testing equipment, such as UL test smoke box, EN test smoke box (AWT, LORENZ), sensitivity automatic setting smoke box, CARBON monoxide gas alarm test box (Siemens core equipment), passive infrared testing equipment, ultrasonic welding machine, laser marking machine, injection molding machine and hardware mold manufacturing equipment.
Shang Tai regards the product quality as the enterprise life, carries on the strict production control and the quality inspection to the product, the production product carries on the 100% sensitivity and the function test. In order to make the products have a more favorable position in the international and domestic market, the designed products are designed and produced according to the specification requirements of their product standards (such as UL268, UL217, EN54, EN14604, 3C, etc. ). A number of products developed and designed by the company have passed the certification of UL, FCC, KFI, NS and EN (LPCB, BSI, INTERTEK, VDS). At present, there are more than 150 types of products and more than 2000 models. Products are exported to all over the world, the company with Europe and the United States, Asia, the Middle East and other different customers established a long-term stable business relations of cooperation.
In order to expand the domestic market, the company acquired Jiangsu Weston Fire equipment Co., Ltd. Weston fire equipment Co., Ltd. is a high-tech cooperative enterprise specializing in the design, development, production, installation and service of fire alarms. Has advanced production testing equipment, its main products JTY GD - 2101 - point type photoelectric smoke fire detector, JTW lh-zd - 2102 - point type heat fire detector, manual fire alarm button J - SA - 2106, JB - TBL - 8100 fire alarm controller (LianDongXing) and so on dozens of products by the national fire electronic product quality supervision and inspection center of qualified, and through the Ministry of Public Security fire product conformity assessment center by CNCA - C18-01: 20 14 "mandatory product certification implementation rules" audit, access to the national mandatory product certification certificate, Use the CCCF certification mark.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- 448 Yingchun Road, Wangchun Industrial Park, Ningbo, Zhejiang, China
-
Plant Area
- 10035.2 square meters
-
Number of Employees
- 148
-
Registered Capital
- 5,190,000 RMB
-
Terms of Payment
- LC, T/T
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month -
Nearest Port
- Ningbo Port, Shanghai Port
-
Minimum Order Quantity
- 2000 Pcs
-
Supply Chain Partners
- 12
Our Production Capability & Technical Expertise
-
Main Products
- Smoke Alarm, Smoke Detector, Magnetic Door Contacts
-
Production Lines
- 6
-
Production Machines
- Injection Facility, CNC Facility, Assembling line
-
QA/QC inspectors
- 10 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 21 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2005-11-14
-
Export Year
- 19 Years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, Africa, East Asia(Japan/ South Korea), Australia
-
Repeat Buyers Choice
- 50%~80%
-
Annual Export Revenue
- 51,679,777.47 RMB
-
Number of Foreign Trading Staff
- 7
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015
-
Cooperated with Fortune 500
- No
FAQ
- Is the detector compatible with 2-wire and 4-wire systems?
- Yes, the HD751 series is designed for use in both 2-wire and 4-wire Class A2 supervised zone circuits.
- Does the product offer auto-reset functionality?
- Yes, the AR (Auto Reset) function is optional for 4-wire models, suitable for security systems.
- What certifications does the heat detector hold?
- It meets UL521, EN 54-5, CE, ISO, RoHS, and NFPA 72 standards.
- What is the warranty period for this product?
- The product comes with a five-year limited warranty.
- Can the relay output be customized?
- Yes, the relay output is selectable as N/C (normal/close) or N/O (normal/open).
- What is the minimum order quantity?
- The minimum order quantity is 2000 pieces.
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