Model: CS11
CS11 Standalone Smoke And Carbon Monoxide Combo Alarm
The CS11 standalone smoke and carbon monoxide combo alarm uses a photoelectric chamber to detect smoke and an electrochemical sensor to monitor CO. Infrared light scattering and CO-generated current enable reliable detection and prompt alerts. It is certified by TUV as an ordinary alarm.
Unit Price: $10.02 – $13.25
Note: The price shown is indicative only—your final cost depends on quantity. Tap “Get A Quote” below and we’ll lock in the best unit price for you within one business day.
Detection Performance
Detection principle | Photo-electric light scattering & Carbon Monoxide Electrochemical |
|---|---|
Smoke sensitivity | 0.09 – 0.17 dB/m |
CO sensitivity | 50ppm: 60~90min |
Wireless & Networking
Digital communication | NA |
|---|---|
Max. interlinked units | NA |
Working distance (open-air) | NA |
Power & Electrical
Power supply | DC 3V,Lithium Battery，CR14505 |
|---|---|
Stand-by current | 30 µA max |
Alarm current (max) | 70 mA max |
Low-battery threshold | 2.6 ± 0.1 V |
Sampling rate | 1 Hz |
Audio & User Interface
Sound level | >85 dB(A) at 3 meters |
|---|---|
Silence duration | ≈ 10 minutes |
Status indicator | Red LED (Alarm) |
Environmental & Mechanical
Operating temperature | 14 ºF to 131 ºF (-10°C to 55°C) |
|---|---|
Humidity range | 0% to 95% RH (no condensation or icing) |
Atmospheric-pressure effect | None |
Air-velocity limit | 0 – 300 fpm |
IP rating | IPx4 |
Housing material | White flame-retardant polycarbonate |
Terminal material | Tin plated stainless steel |
Factory Certificates
ISO 9001 Certificate 
BSCI Certificate
Product Certificates
CE EN50291 For CO alarm 
SM11 EMC certification 
BS5446 Approval 
AS3786 2014 certification 
RED For wireless combination alarm 
CE EN14604 from TUV 
Smoke alarm Rohs Approval
Product Appearance Patents
SM11 Australian Design Patent 
Heat alarm design patent 
Gas alarm testing device -
Gas alarm design patent 
A kitchen smoke and temperature integrated detection device 
Smoke alarm design patent 
Combined alarm design patent -
CO alarm design patent
The CS11 Standalone Smoke And Carbon Monoxide Combo Alarm monitors smoke and Carbon Monoxide by using a chamber and electrochemical sensor. The chamber utilizes infrared emission and reception technology. When there is no smoke in the environment, the receiver cannot receive infrared light; when there is smoke, smoke particles scatter infrared light, altering the receiver’s signal and triggering the alarm. Also, ambient air (containing carbon monoxide) slowly diffuses into the CO sensor through vents on the alarm casing. This generates an electric current: the reaction produces a tiny flow of electrons (current). The higher the concentration of carbon monoxide, the more molecules participate in the reaction, and the stronger the current produced. It is classified as an ordinary Alarm by TUV.
Key Features
CFS® (Shenzhen Fire Security Technology Co., Ltd.), as a leading manufacturer specializing in fire safety alarms, we design and produce a comprehensive range of Smoke Alarms, CO Alarms, and Combo Alarms to protect homes and businesses worldwide.
🏭 OEM & ODM Services Available
We offer complete customization services including private labeling, custom packaging, and product modifications to meet your specific market requirements.
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