Features:
High Precision Bidirectional Sensor: This smoke and carbon monoxide detector is equipped with a high-precision photoelectric smoke sensor and an electrochemical CO sensor, offering reliable protection against smoke and carbon monoxide. The sensors are highly sensitive, ensuring early detection of potential hazards.
Portable Design: The compact and lightweight design of this CO detector makes it perfect for travel. Whether you’re staying in a hotel or visiting friends and family, you can carry this detector with you for an extra layer of safety.
Real-Time Display: The built-in LCD screen of detector displays the real-time concentration of carbon monoxide, allowing you to monitor the levels at a glance. This feature is particularly useful for households with gas appliances or fireplaces, as it provides constant awareness of the CO levels.
Easy to Use: Our carbon monoxide detector is powered by 3 AA batteries (not included) and can be easily installed in any room. The LED indicator light provides a clear visual signal for alarms, making it easy to identify any potential danger.
Versatile Alarm: With a wide detection range of 0-999ppm, this carbon monoxide smoke alarm ensures that even small amounts of carbon monoxide are detected. When dangerous levels of CO are detected, the alarm emits a 85dB high sound and light alarm to alert you immediately.
Specifications:
Product material: Plastic shell
Product size: 10.7 x 10.7 x 3.8cm / 4.21 x 4.21 x 1.49in
Product weight: 105g / 3.7oz
Product color: White
Power supply: DC4.5V 3*AA alkaline batteries (NOT Included)
Sensor type: Photoelectric smoke sensor and electrochemical CO sensor
Standby current: ＜98uA
Environmental conditions: Temperature 0-49°C / 32-120.2°F, humidity ≤95%RH
Quantity: 2pcs 
Detectable gas: Carbon monoxide, smoke
Alarm mode: Scene alarm, sound + flash (auditory + visual)
Detection range: 0-999ppm
Alarm decibel: 85dB
Packing List:
2x Carbon Monoxide Detector
1 set x Mounting Screws
1 x Manual