1、 Core application scope: Carbon monoxide (CO) is a colorless, odorless, and non irritating highly toxic gas. Therefore, the CO detector is a crucial "electronic nose" for preventing poisoning. Its main application areas cover the following scenarios: Application areas Specific scenarios and risk points 1 Core scenarios for home and residential safety: bathrooms and kitchens using gas water heaters. Install gas stoves, coal stoves, and charcoal burners in rooms (especially for winter heating). A residence connected to an indoor garage or enclosed parking lot. • Use a fuel powered generator or barbecue grill indoors/semi indoors. 2. Core scenes of commercial and public places: kitchens, boiler rooms, and laundry rooms in hotels, restaurants, schools, and hospitals. Ventilation monitoring of underground parking lots and enclosed garages. Shopping malls and office buildings that use fuel/gas heating systems. 3. Core scenarios of industrial and production safety: • Process areas that generate CO in petrochemicals, metallurgical casting, chemical synthesis, etc. Working environments with poor ventilation, such as mine tunnels and tunnel construction. • Engine exhaust gathering areas such as car repair workshops and spray painting work areas. Places where combustion equipment is concentrated, such as boiler rooms and power stations. 4. Specific professions and core activity scenarios: Firefighters enter the fire scene (where building materials burn and produce a large amount of CO). Portable testing for miners and tunnel workers. Monitoring the living quarters of enclosed transportation vehicles such as RVs and yachts. 2、 Standard usage method (taking household/commercial fixed/portable as an example)

Proper use is the key to ensuring its effectiveness. Please follow the following steps: Step: Installation and placement (fixed) Position: Install near possible sources of leakage (such as gas water heaters, boilers), but avoid direct blowing from the exhaust port. Meanwhile, considering that CO is slightly lighter than air and easily mixed, it is recommended to install it on a wall about 1.5 meters above the ground or within 1-3 meters of potential leakage sources. ·Avoid location: Do not install near ventilation openings, doors and windows, corners of walls, or areas with high concentrations of oil fumes, dust, and water vapor to avoid affecting sensor accuracy. ·Power supply check: Ensure stable power connection (fixed type) or sufficient battery power (portable/fixed backup battery). Step 2: Power on self-test and testing: After connecting the power or turning on the device, the instrument will perform a self-test process for about 30-60 seconds. All indicator lights will light up and may be accompanied by a brief beep, and the screen will display the reading. After it stabilizes and displays "0'ppm" or low environmental concentration, it indicates that it has entered normal working state. ·Regular functional testing: Press the 'TEST' button, and the instrument should trigger an audible and visual alarm to confirm that the alarm function is normal. Suggest testing once a month. Step 3: Daily monitoring and reading · Real time display: Under normal conditions, the screen will continuously display the CO concentration (unit: ppm) in the current environment. ·Concentration awareness: · Safety range: The environmental background value is usually below 9ppm. ·Attention threshold: If it remains above 9ppm, it is necessary to pay attention to and investigate the source, and strengthen ventilation. ·Alarm threshold: According to Chinese standards, the low alarm threshold for civilian alarms is generally set at 50-100ppm, and the high alarm threshold is set at 150-300ppm (see product manual for details). When an alarm is triggered, immediate action should be taken. Step 4: Alarm Response and Emergency Handling 1 Immediate ventilation: Quickly open all doors and windows and force convection ventilation. 2. Evacuation personnel: Guide everyone (including pets) to evacuate to a place with fresh outdoor air. 3. Turn off the source device: Under the premise of ensuring safety, turn off gas equipment, heaters, etc. that are suspected of leaking. 4. Do not perform dangerous operations: It is strictly prohibited to use open flames, switch on or off any electrical appliances (to avoid electric sparks), and do not use telephones in the alarm area. 5. Contact for help: After going outdoors, contact the gas company or professional personnel for maintenance. If anyone experiences symptoms of poisoning (headache, dizziness, vomiting), immediately call 120 for emergency medical assistance. 6. Alarm reset: After the hidden danger is eliminated and the indoor CO concentration drops to the safe range, the alarm will automatically stop (or press the reset button to reset), and the instrument will resume normal monitoring. Step 5: Regular maintenance and calibration · Cleaning: Regularly clean the dust on the surface of the instrument with a soft cloth to ensure that the air inlet is unobstructed. ·Calibration: According to the instructions (usually once a year), contact the manufacturer or professional organization to calibrate using standard gases to ensure measurement accuracy. The lifespan of sensors is usually 2-5 years, and they need to be replaced upon expiration. ·Record: Record the date and situation of each test, alarm, and maintenance. 3、 Important technical parameters reference (typical values) Project typical parameters/explanation Detection principle Electrochemical sensors (mainstream), semiconductor sensors, infrared sensors Measurement range 0-500 ppm or 0-1000 ppm (common household/commercial) Alarm threshold low alarm: 50-100 ppm; High report: 150-300 ppm (adjustable, needs to be set according to regulations) Response time ≤ 60 seconds (reaching 90% reading, electrochemical principle) Working environment temperature: -10 ℃~50 ℃; Humidity: 10-95% RH (non condensing) Power supply AC 220V/built-in lithium battery (backup)/replaceable battery (portable) Certification must be selected. Products that have passed the National Fire Product Certification (CCCF) and comply with standards such as GB 15322.2. Summary and core recommendations: Carbon monoxide detectors are a technical line of defense to protect life safety. The key is: 1 Install in the right place: close to the source of risk, at the correct height. 2. Regular testing: Press the test button once a month to ensure that the alarm is loud. 3. Know how to respond: When the alarm sounds, immediately "ventilate, evacuate, close valves, and seek help" Timely replacement: Pay attention to the lifespan of the sensor and replace the entire machine or sensor upon expiration.