What power supply does the smoke detector use?

The device uses DC 3V power, provided by 2*1.5V alkaline batteries.

What is the monitoring current of the detector?

The monitoring current is less than or equal to 4mA.

Factory Price Smoke Detector Conventional Wireless Fire Alarm Smoke Detectors/Alarms

Name: Factory Price Smoke Detector Conventional Wireless Fire Alarm Smoke Detectors/Alarms
Brand: Shenzhen Sumring Technology Co., Limited
SKU: 2044648725

Guangdong, ChinaShenzhen Sumring Technology Co., Limited

US$2.89

1-499 Pieces

US$2.59

500-999 Pieces

US$2.39

1,000-2,999 Pieces

US$2.29

3,000+ Pieces

Sample price:US$2.89/piece.Request sample

Product profile

Customization

Available

Type

Smoke Detectors

Anti-theft Alarm System Approach

Passive

Model NO.

SR-803-3

Anti-Theft Alarm System Type

Smoke Alarms

Anti-Theft Alarm System-Wide

Space Security Alarm Detector

Anti-Theft Alarm System Distance

Power Detector

Types of Smoke Detectors

Photoelectric Smoke Style

Product Name

Home En50291 Carbon Monoxide Alarm Gas Detector Wi

Color

White

Application

Home ,Factories, Shopping Malls, Warehouses, Offic

Working Temperature

5-40℃

Warranty

1 Year

Power Supply

9V Battery

Certificate

CE&En50291 RoHS

Material

ABS Plastic

Sensor Life

2-3years

Dimensions

100mm*38mm

Origin

China

Key features

Long Battery Life: Battery works for over 3 years with low power consumption.

High Sensitivity Alarm: Loud alarm volume exceeds 70dB at 3 meters distance.

Stable Performance: Built-in intelligent processor with automatic drift compensation.

Easy Installation: Standalone design suitable for homes, factories, and malls.

Certified Quality: Products certified with CE, RoHS, and EN50291 standards.

Custom Branding: OEM service available; customers can print their logo.

Company profile

Shenzhen Sumring Technology Co., Limited

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2006-06-01 CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤6.51h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShenzhen Sumring Technology Co., Limited is a China-based limited company in Shenzhen that is identified as both a trading company and manufacturer/factory. It offers fire alarm, security, detection, and smart-home products, operates four production lines, and reports export activity since 2006 with broad international markets and 90% of sales from exports. The supplier reports ISO 9001 and ISO 14001 certifications, 11–20 years of R&D engineer experience, and 21–30 quality-control staff. Its stated lead time is within 15 working days during off-peak periods and one month during peak periods. Evidence supports production experience, export capability, quality-system certification, and R&D resources. However, the provided information does not sufficiently establish after-sales procedures, customization services, detailed customer cases, or overall financial credibility.

Supplier typeThe supplier is described as a trade company in its basic information and as both a trading company and manufacturer/factory in its business-entity classification. Its legal name, Shenzhen location, and listed products are consistently identified, indicating a China-based supplier with both trading and manufacturing roles.

CertificationsThe supplier explicitly reports holding ISO 9001 and ISO 14001 management-system certifications. These certifications provide direct evidence of formal quality and environmental management systems, although no certificate numbers, issuing bodies, or validity dates are provided.

R&D capabilityThe supplier describes itself as operating in a high-tech industry, reports 11–20 years of R&D engineer experience, and offers products including Bluetooth modules, smart-home products, detectors, and fire-alarm equipment. This supports the existence of relevant R&D resources and technology-oriented products, but no specific patents, new-product record, or development projects are provided.

Production capacityThe supplier is classified as a manufacturer/factory, operates four production lines, and reports 21–30 quality-control staff. It also states an off-peak lead time of within 15 working days and a peak-season fulfillment time of one month, providing direct evidence of organized production and quality-control capacity.