10 Year Thermally Enhanced Optical Smoke Alarm
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Product Highlights
- 10-Year Lifespan: Thermally enhanced optical smoke alarm designed for a 10-year operational life.
- Advanced Detection Algorithms: Features advanced detection and discrimination algorithms for accurate sensing.
- Durable Sensor Head: Durable sensor head design eliminates the need for replacement over time.
- Low-Profile Housing: Polished low-profile housing design for aesthetic integration and easy installation.
- Dual LED Indicator: Equipped with two LEDs providing a 360-degree visual angle for status indication.
- Flexible Relay Outputs: Offers N/C and N/O relay output options for various security system integrations.
- Auto-Reset Function: Optional auto-reset (AR) function available for 4-wire models to enhance security.
- Full Customization Available: Supports full customization, minor customization, and customization from samples or designs.
Product Attributes
- Customization
- Available
- Type
- Smoke Alarm
- Signal Transmission
- Wired Alarm
- Model NO.
- SD388-2L
- Working Mode
- Active
- Certification
- CE
- Application
- Indoor
- Working Principle
- Electro-Optical Type
- Transmission Mode
- Cable
- Alarm Volume (within 1m)
- ≥80dB
- Receive Frequency
- No
- Color
- White
- Weight
- 120g/Set with Base
- Dimensions
- 102mm(Dia.)*43mm(Ht) with Base
- Certificate
- UL/En
- Ceiling Spacing
- 50 Foot Rating for Heat Sensor
- Smoke Sensitivity
- 0.98--2.40%/FT Obscuration (UL) ; 0.08--0.14 dB/M
- Product Name
- Photoelectric Smoke Fire Sensor
- Transport Package
- 100PCS/Carton
- Specification
- 102mm (dia) x 43mm (ht) with base
- Trademark
- Sentek
- Origin
- Ningbo China
- HS Code
- 8531901000
- Production Capacity
- 100000/Month
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Product Description

Specifications:
| Smoke Sensitivity | 0.98--2.40%/FT Obscuration (UL) ; 0.08--0.14 dB/m (EN) |
| Ceiling Spacing | 50 foot rating for heat sensor |
| Temperature Range | -10°C to 50°C |
| Humidity | 0 to 95% RH, no condensation or icing |
| Dimensions | 102mm (dia.) x 43mm (ht) with base |
| Weight | 120g/set with base |
10 Year Thermally Enhanced Optical Smoke Alarm
The range includes:
| SD-388-2 | 2 wire photoelectric smoke alarm |
| SD-388-2L | 2 wire photoelectric smoke alarm with remote LED output |
| SD-388-2H | 2 wire photoelectric smoke and heat alarm |
| SD-388-2HL | 2 wire photoelectric smoke and heat alarm with remote LED output |
| SD-388-4-12/24 | 4 wire photoelectric smoke alarm (12/24VDC) |
| SD-388-4AR-12/24 | 4 wire photoelectric smoke alarm with auto-reset function (12/24VDC) |
| SD-388-4H-12/24 | 4 wire photoelectric smoke and heat alarm (12V/24DC) |
| SD-388-4HAR-12/24 | 4 wire photoelectric smoke and heat alarm with auto-reset function (12/24VDC) |
Feartures:
1) Advanced detection and discrimination algorithms
2) Easy installation and maintenance
3) Polished low-profile housing design
4) Durable sensor head, no need for replacement
5) SMD circuit board design: Satisfactory quality and reliability guaranteed
6) Integrated heat detector for SD119-2H and SD119-4H models
7) N/C (normal / close) and N/O (normal / open) relay output ways for option
8) AR (auto reset) function for security systems (optional for 4-wire models)
9) Sensor base: Standard and Schottky diode style for option
10) With two LED, more 360 degree visual angle

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.
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
- What is the lifespan of this smoke alarm?
- This is a 10-year thermally enhanced optical smoke alarm designed for long-term reliability.
- Does the sensor head require replacement?
- No, the sensor head is durable and does not need replacement during the product's life.
- What are the available relay output options?
- The device offers N/C (normal close) and N/O (normal open) relay output ways for option.
- Is customization available for this product?
- Yes, full customization, minor customization, and customization from samples or designs are available.
- What is the minimum order quantity?
- The minimum order quantity is 2000 pieces.
- What are the lead times for production?
- The average lead time is one month for both peak season and off-season.
- What certifications does the product hold?
- The product holds CE and UL/En certifications.
- What is the alarm volume level?
- The alarm volume is at least 80dB within a 1-meter range.
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Product Groups
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