Product Review

As the only US Based Retailer of this item, We have a Chemist on Staff to answer any Technical Questions. We also Give e-books about Tips to Help Prevent Carbon Monoxide and How to Escape a Burning Building.
This Combination CO/Smoke Carbon alarm features an 85dB/3m Horn and Voice that announces "Fire", "Carbon Monoxide", and "Low Battery" Warnings When Detected.
Meets NFPA 72 standards / UL Standards Smoke and Carbon Monoxide Alarm, Detection Method Lonization, Electrochemical, Up to 24 Units Lnterconnection Capability, Audible Alert 85dB @ 10 ft., Horn, Visual Alert Red LED, Diameter 5-3/4 In., Height 1-3/4 In., Digital Readout Yes, Battery Backup Yes, Features Voice Warning, Peak Level Memory, Reset Button, Hush Button Yes, Locking Pin Yes, Operating Temp. 40 Degrees to 100 Degrees F, Includes Mounting Anchors and Screws
Features:
* Battery low Voltage tips
*Test & Reset Button
* Lnfrared Photoelectric Sensor
*3 Color lights for Different alarm State
* Sound and Light alarm / LED indication alarm
* SMT industry, Strong Stability
MCU automatic Processing Technology to improve Product Stability
Technical Parameters
Working Power: 3V Battery (Three AA 1.5V) （ Package not include）
Quiescent Current: <8uA
Alarm Current: <35mA
Sensitivity: 2.06% / ft ± 1.3
Alarm indication: red LED flashes
Alarm sound pressure: ≥ 85dB / 3m Department
Operating temperature: -10 ℃ ~ +50 ℃
Relative Humidity:10%-95%RH
Dimensions: φ104x39mm
Executive Standard: GB4715-005; En14604
Alarm indicationCO: Red light flash and Buzzer
Smoke: Bule light Flash and Buzzer
Coverage Area:
When the Space Height is 6m-12m, the Protective area of one Detector is 80m2
for the General Protection Site and 60m2 for the Space Height of 6m or Less.