Combined Smoke and CO Detector, Smoke & Carbon Monoxide Alarm, Dual Smoke-CO Sensor, Integrated Smoke and CO Tester, Multi-Gas Fire Safety Detector
Customer Service Hotline：
+8613261677119
Combined Smoke and CO Detector, Smoke & Carbon Monoxide Alarm, Dual Smoke-CO Sensor, Integrated Smoke and CO Tester, Multi-Gas Fire Safety Detector+8613261677119
Combined Smoke and CO Detector | Smoke and Carbon Monoxide Alarm | Dual Smoke-CO Sensor | Integrated Smoke and CO Tester | Multi-Gas Fire Safety Detector
OEM/ODM | Custom Development | Factory Visit Welcome | Round-Trip Airfare Reimbursement | Free Accommodation and Meals
Are you a global trade partner, cross-border e-commerce seller, sourcing agent, or local distributor looking for a direct Chinese manufacturer of combined smoke and CO detectors?
Do you want to source smoke and carbon monoxide alarms and dual smoke-CO sensors without dealing with trading company markups?
Wanlin Fire Technology – a verified manufacturer of home fire alarm and detection devices – is now expanding our international partner network. We specialize in multi-gas fire safety detection technology and are ready to become your long-term supplier.
We are not a middleman. We are the source factory. We offer complete export solutions for combined smoke and CO detectors, smoke and carbon monoxide alarms, dual smoke-CO sensors, integrated smoke and CO testers, and multi-gas fire safety detectors. Our philosophy is simple: win-win cooperation, quality assurance, and exceptional service for every global partner.
Combined smoke and CO detectors provide dual protection against two leading causes of home fatalities: fire and carbon monoxide poisoning. One device protects against both threats, saving installation space and reducing costs. All products are designed to meet CE, RoHS, EN14604, EN50291, UL217, UL2034, and UKCA certifications.
Dual detection: photoelectric smoke sensing chamber and electrochemical CO sensor in one compact unit
Independent alarm patterns: distinct audible and visual signals for smoke versus CO events
Smoke detection: responds to slow-smoldering fires typical of upholstery, bedding, and electrical faults
CO detection: electrochemical sensor with high accuracy for carbon monoxide from 0 to 500 ppm
Available in 10-year sealed lithium battery, replaceable battery, or hardwired with battery backup
Interconnectable version available (wireless RF up to 24 units)
End-of-life warning at 7 to 10 years for complete unit replacement
Operating temperature: -10°C to +55°C with humidity tolerance up to 95 percent RH
Advanced photoelectric smoke chamber with insect screen protection
High-precision electrochemical CO sensor with 5 to 7 year lifespan
Digital display showing real-time CO levels in parts per million
Peak level memory stores highest CO concentration since last reset
Distinct alarm patterns: three beeps for smoke, four beeps for CO (UL standard)
Voice alert option: announces Fire or Carbon Monoxide for immediate identification
Hush button silences nuisance smoke alarms without affecting CO detection
Self-test function verifies both smoke sensor and CO sensor simultaneously
Integrated sensor module combining photoelectric smoke detection and electrochemical CO sensing
Compact design for OEM integration into existing product lines
Factory calibrated and tested as complete assembly
Digital communication interface for host system integration
Low power consumption suitable for battery-powered applications
Available in various sensitivity configurations for different markets
Ideal for smart home devices, HVAC systems, and industrial safety equipment
Professional testing tool for combined smoke-CO detectors
Simulates both smoke conditions and calibrated CO concentrations
Non-flammable aerosol formulation safe for electronic components
Adjustable output for different sensitivity testing requirements
Compatible with all major brands of combination detectors
Includes adapter for testing CO sensor through detector vents
Reusable design for maintenance professionals and inspectors
Expanded detection beyond smoke and CO including natural gas or LPG options
Three-in-one or four-in-one configurations available
Photoelectric smoke plus electrochemical CO plus semiconductor gas sensor
Ideal for comprehensive home safety in single device
Digital display showing readings from all sensors
Mobile APP connectivity for remote monitoring (select models)
Suitable for RVs, boats, cabins, and off-grid applications
All products undergo 100 percent pre-shipment quality control including smoke sensitivity calibration, CO sensor accuracy verification, environmental chamber testing, and accelerated life testing. Multi-language user manuals available.
Why Combine Smoke and CO Detection? Smoke detectors save lives from fire. Carbon monoxide detectors save lives from invisible, odorless gas poisoning. Many homes have neither, or have only one type. A combined detector provides complete protection in a single device, reducing cost, installation effort, and maintenance requirements.
Smoke Detection Technology (Photoelectric)
Uses light-scattering principle with infrared LED and photosensor
Best for slow-smoldering fires from upholstery, bedding, foam, and electrical wiring
Lower false alarm rate from cooking than ionization technology
Detects visible smoke particles typically above 0.3 microns
Meets UL217 and EN14604 standards
Carbon Monoxide Detection Technology (Electrochemical)
Electrochemical sensor with three electrodes: working, counter, and reference
Chemical reaction generates current proportional to CO concentration
High accuracy from 0 to 500 ppm CO
Low power consumption suitable for battery operation
5 to 7 year typical sensor lifespan
Meets UL2034 and EN50291 standards
Benefits of Combination Devices
Single installation location instead of two separate devices
Lower total cost than buying separate smoke and CO detectors
Reduced maintenance: one battery, one test button, one end-of-life replacement
Saves ceiling or wall space in small rooms
Simplified compliance with safety codes requiring both protections
Distinct alarm patterns eliminate confusion about threat type
How Combined Detectors Work
Smoke and CO sensors operate independently within same housing
Microprocessor monitors both sensors continuously
Distinct alarm patterns identify which threat triggered the alarm
Some models use different LED flash patterns or voice alerts
Hush button silences smoke alarm but cannot silence CO alarm (safety feature)
CO alarm automatically resets when CO level drops below threshold
Wanlin's combined smoke and CO detectors use premium photoelectric smoke chambers and high-quality electrochemical CO sensors from certified suppliers. Each unit undergoes individual calibration and testing before shipment.
We understand that every market has unique requirements. Wanlin offers full customization for all our combined smoke and CO detection products.
Housing and Design
Custom colors according to any RAL or Pantone code
Logo engraving or silk-screening on front cover
Button placement, shape, and tactile feel customization
LED indicator color selection including red for smoke, amber for CO, green for power
Digital display customization: show CO level, temperature, or both
Ventilation design for optimal smoke and gas entry
Sensor Configuration
Photoelectric smoke chamber: standard or high-sensitivity options
Electrochemical CO sensor: 5-year or 7-year lifespan versions
Additional sensors: natural gas, LPG, temperature, humidity
Custom alarm thresholds for specific market regulations
Wireless interconnect module integration
PCB and Firmware
Calibration parameters adjustable for specific regional standards
Alarm algorithm customization for specific environments
Communication protocol selection including wireless frequencies
Alarm sound pattern and volume customization
Distinct alarm pattern per UL or EN requirements
Self-test scheduling and fault reporting timing
Display and User Interface
Digital CO display with backlight options
Peak level memory and reset functionality
Voice alert customization with multiple languages
APP connectivity for remote monitoring (Wi-Fi or Bluetooth models)
Buzzer volume adjustment options
Power Options
10-year sealed lithium battery for maintenance-free operation
Replaceable battery: AA, 9V, or CR123A configurations
Hardwired with battery backup for continuous operation
Low voltage DC power (12V or 24V) for professional systems
Packaging and Labeling
Retail box design with your branding and product features
Blister packs, polybags, or eco-friendly packaging options
Custom labels with serial number, batch tracking, and regulatory marks
Multi-language user manuals and installation guides
Certification Support
We help you comply with local standards including UL217 and UL2034 for United States, EN14604 and EN50291 for Europe, AS3786 and AS/RCM for Australia, and more
Technical file preparation for product registration
Sample provision for third-party testing laboratories
CO sensor calibration documentation provided
Low MOQ for Trial Orders – as few as 500 units for selected models
Fast Sampling – 10 to 15 working days for custom samples
Full Technical Documentation – for product registration and market approval
Dedicated R&D Support – for custom sensor integration and wireless development
We believe the best partnership is built on trust – and trust is built face to face.
For serious global partners including distributors, importers, sourcing agents, and volume buyers, Wanlin offers:
Round-trip airfare reimbursement – economy class tickets, upon confirmed order or signed partnership agreement
Free accommodation – quality hotel stay during factory inspection days for up to 3 nights
Free local meals and transportation – airport pickup, all meals, and local travel during your visit
During your visit, you will:
Tour our production lines and witness combined detector assembly and calibration
See our CO sensor testing laboratory with gas concentration verification equipment
Visit our smoke sensitivity calibration chambers
Test our smoke and CO alarms in both fire simulation and CO concentration tests
Meet our R&D engineers and discuss custom sensor configurations
Review export documentation, supply chain processes, and quality assurance protocols
Visit our warehouse and see finished goods ready for shipment
Discuss long-term partnership agreements and exclusive territory arrangements
This offer applies to genuine buyers, distributors, and long-term cooperation seekers. Contact us for eligibility details and complete terms.
Wanlin is committed to cooperative success. We do not chase short-term profits. We build long-term relationships based on quality, service, and mutual growth.
| Partner Type | What We Offer |
|---|---|
| Fire Safety Distributor | Bulk pricing with tiered volume discounts, container shipping options including FCL and LCL, exclusive territory discussion, stock holding support, marketing materials highlighting combined detector benefits |
| Electrical and Safety Equipment Vendor | Reliable combined detectors with dual protection, technical training on CO safety, spare parts inventory, 1-year warranty with extended options |
| Cross-border Seller (Amazon, eBay, Shopify, Walmart) | Private label service, FBA-ready packaging, GS1 barcode support, compliance documentation package, enhanced listing content explaining dual protection advantages |
| Sourcing Agent or Trading Company | Factory-direct pricing without middleman markups, commission protection agreement, sample access within 3 to 5 days, 24-hour reply guarantee, dedicated English-speaking account manager |
| OEM Customer for Sensor Modules | Factory-calibrated dual smoke-CO sensor modules, custom communication protocols, long-term supply agreement, NDA and exclusivity options available |
| Government Tender or NGO Supplier | Volume pricing for large-scale projects, complete certification packages, drop-shipping to multiple locations, compliance documentation for public safety tenders |
Our Values
Quality Guarantee – 100 percent pre-shipment inspection, smoke sensitivity calibration on every unit, CO sensor accuracy verification, environmental chamber testing, 1-year warranty with replacement guarantee
Responsive Service – English-speaking export team, reply within 24 hours (typically within 12 hours), technical support via WhatsApp, WeChat, Skype, or email
Fair Pricing – No hidden fees, transparent cost breakdown including materials, sensors, battery, labor, and certification, volume discounts automatically applied
Shared Growth – Marketing materials, product catalogs, technical white papers on combined detection, installation videos, and documentation provided free of charge
Long-term Commitment – We treat every partner as part of the Wanlin family with regular communication and joint business planning
When you partner with Wanlin, you get a turnkey export service designed for hassle-free international trade.
Customization and Branding
Custom labeling and retail packaging – your brand, your design, your language
Custom user manuals with dual protection explanation – we translate and design professionally
Sample approval before mass production with photo, video, and physical sample verification
Quality Control
In-line quality control during production at each assembly stage
Smoke sensitivity calibration on 100 percent of finished units
CO sensor accuracy verification using certified gas concentrations on batch samples
Environmental chamber testing including temperature and humidity on batch samples
100 percent final functional testing before packaging
Third-party inspection supported including SGS, BV, TUV, and Intertek
Shipping and Logistics
Full shipping documents provided: Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, Form E, CE and UL declarations, MSDS for batteries, CO sensor documentation
Flexible shipping options: sea freight including FCL 20ft or 40ft and LCL consolidation, air freight, express via DHL, FedEx, or UPS
DDP (Delivered Duty Paid) available for select countries including United States, Germany, France, United Kingdom, Australia, and Canada
After-Sales Support
Technical hotline for installation and troubleshooting questions
Spare parts supply guaranteed for 3 years after last order date
Warranty returns processing with local return or replacement options
Online training sessions for your sales team and technical installers
We have successfully exported to North America, Europe, Southeast Asia, the Middle East, South America, Africa, and Australia.
Wanlin's combined smoke and CO detectors are ideal for residential and light commercial applications where both fire and carbon monoxide hazards exist.
Residential homes and apartments – complete protection in every sleeping area
Hotels and motels – guest room safety compliance
Rental properties and leased housing – landlord compliance with fewer devices
Vacation homes and cabins – protection for unoccupied periods
RVs, campers, and mobile homes – space-saving solution
Boats and marine vessels – both smoke and CO from engines
Garages and attached workshops – CO hazard from vehicle exhaust
Homes with attached garages – CO migration into living spaces
Homes with fuel-burning appliances – furnaces, water heaters, stoves
Senior living facilities – simplified maintenance with fewer devices
Schools and daycare centers – complete protection in boiler rooms and kitchens
Small offices and commercial spaces – cost-effective compliance
Why CO Detection is Critical
Carbon monoxide is invisible, odorless, tasteless, and non-irritating
Hundreds die annually from accidental CO poisoning
Common sources: furnaces, water heaters, fireplaces, generators, vehicles, gas stoves
Early symptoms mimic flu: headache, dizziness, nausea, confusion
High levels can cause death within minutes
Where to Install Combined Detectors
Each sleeping area or bedroom
Each level of the home including basement
Outside each sleeping area in hallway
Near attached garages
At least 5 feet above floor (CO is slightly lighter than air)
Not in dead air spaces or near combustion appliances
Where NOT to Install
Within 15 feet of cooking appliances
In garages (CO from vehicle exhaust will cause false alarms)
In direct sunlight or near HVAC supply vents
In areas with temperature below -10°C or above 55°C
In extremely dusty or humid environments
| Feature | Separate Smoke + Separate CO | Combined Smoke and CO by Wanlin |
|---|---|---|
| Number of devices needed | 2 per location | 1 per location |
| Installation cost | Higher (two devices, two mounts) | Lower (single device) |
| Total cost | Higher | Lower |
| Ceiling/wall space used | Twice as much | Half as much |
| Battery replacements | Two batteries to track | One battery |
| Test button operations | Two separate tests | One test button tests both |
| End-of-life replacement | Two different schedules | Single replacement date |
| Distinct alarm patterns | Different patterns on separate devices | Different patterns on one device |
| Aesthetic impact | Two devices on ceiling | One device |
| Compliance simplicity | Must ensure both types present | One device covers both requirements |
| Ideal application | Large rooms with space | Small rooms, RVs, boats, apartments |
You do not need to be the biggest company. You just need a reliable, honest, and capable manufacturer who treats you as a true partner.
Email: wanlinfirecontrol@163.com
Export Hotline (WhatsApp, WeChat, Phone): +86 13261677119
Official Website: www.wanlinfire.com