3 Packs Carbon Monoxide Detectors,CO Alarm Detector Monitor Battery Operated with PPM Value Display,Carbon Monoxide Alarm with Sound &Light Warning,Accurate & Easy to Read,for Home Kitchen Office

Advanced CO Detection: Equipped with an advanced electrochemical carbon monoxide sensor, Carbon monoxide detectors efficiently monitors for dangerous levels of CO in your home. When hazardous CO concentrations are detected, the alarm sounds loudly (85 dB at 3 meters) and a red CO LED flashes to alert you. this CO alarm accurately detects CO levels wherever it is placed in the room.
Sensitive Sensing: The digital LCD display provides real-time carbon monoxide concentration readings, ranging from 000 to 999 PPM. When the concentration exceeds specific levels, the display lights up automatically with blue text: Above 30
PPM: Display lights up, indicating CO presence. 50
PPM: Alarm sounds within 60 to 90 minutes. 100
PPM: Alarm activates within 3 minutes. 300
PPM: Alarm triggers within 3 minutes.
Note: When testing the detector, avoid blowing gas directly into the sensor hole.
Easy to Use the Carbon Monoxide Alarm: One simple test/silence button for easy operation. This alarm is powered by 3 AAA batteries (batteries not included). Once the batteries are installed, the unit will automatically power on and begin a 30-second countdown to enter working mode. During operation, you can view the real-time PPM value at any time. The indicator light and PPM display will turn off after a period of inactivity. The green LED will flash once every 30 seconds to show the alarm is in normal operation.
Comprehensive Protection: Compact Size carbon monoxide detector Measuring just 4.7 × 2.7 × 0.98 inches (120 × 70 × 25 mm) Perfect for any home. For maximum safety, place one unit on each level of your home and in every bedroom.
Clear LED Indicators: This carbon monoxide alarm features three LED indicators to provide straightforward feedback on its status: Green
LED: Flashes every 30 seconds to indicate the unit is operating normally.
Red LED: Flashes red and sounds an alarm when CO is detected. It also flashes red (without sound) to indicate a low battery.
Yellow LED: Flashes yellow to signal a fault with the unit.