Combination Smoke and Carbon Monoxide Alarm 【Passed Multiple Certifications】 Smoke Detector conforms to UL 2034 standardand is CE-certified.Its safety certificates include: CE,ROHS,FCC. more safe and reliable 【Zero-Risk Purchase】The combination smoke and carbon monoxide alarm complies with UL217 and UL2034 standards. We are committed to offering qualified ducts and best customer service. Full refund or free return within 60-day money-back guarantee, 3-year quality warranty, and lifetime technical support，Protect your home and family with smoke alarms! 【Display Accurate Concentration Real-time Monitoring LCD Display】 Real-time Monitoring 24 Hours a Day,When the Screen Displays the Carbon Monoxide and Smoke Concentration Values Reaching the Standard,the Alarm Will Immediately Alarm 【Intelligent Detection of Multiple Gases Responsie】Internal Dual Sensors Can Detect Carbon Monoxide ,Smoke And Other Gases Continue to Take Care of Your Family's Health 【85dB High-Pitched Aound and Light Alarm】Using a High-Pitched Buzzer,When a High Concentration of Carbon Monoxide is Eetected or a Fire Occurs,the Detector Will Emit a Sharp Alarm Buzzer,Effectively Reminding Nearby People to be Alert and Implement Rescue and Evacuation in Time 【One-Key Self-Check Fuction 】【Fault Self-Check / Prompt Alarm】Short Press the Test/Self-Check Button of the Detector,the Red and Blue Lights Flash Alternately,The Detector Beeps,The LCD Displays the Current Gas Concen-Tration Value,And The Detector Functions Normally. 【Simple and Convenient Hassle-Free Installation】The Home Composite Detector Can Be Installed by Sticking Which is More Convenient and Worry-Free to Use 【Battery Powered】Powered by three 1.5V AA batteries, this alarm is long life, durable and safe. You'll receive audible and visual alerts when it's time to replace the battery. Specification： Detection Gas：Smoke, Carbon Monoxide Material：ABS Fire Engineering Plastics CO: sensitivity and time 50PPM 60-90 minutes alarm ,100PPM 10-40 minutes, alarm 300PPM 3 minutes alarm Power Source:Battery Powered (included) Alarm Mode：90dB High-Pitched, Sound And Light Alarm Working Humidity：≤95% RH Package Content: 1x Combination smoke detector 1x Set Mounting Anchors and Screws 3x1.5V AA battery 
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