CMTOOL Portable Air Quality Monitor for Indoor & Outdoor - HCHO TVOC CO2 Detector with Temperature & Humidity Meter | Home, Office, Travel Use

FAQ Q: Can the alarm be disabled? A: Yes, the mute button is used to turn on or turn off the beeping sound. In silent mode, the mute symbol is not displayed and there is no beeping sound. Q: How to reset and recalibrate the air quality tester? A: In a place with good outdoor air, press the "calibration button" on the device for 3 seconds and hear a beep. WIDE APPLICATION The air quality analyzer help monitor air quality and is widely used in the home, office, car, kitchen, bedroom, gym, hotel, camping, party and more. MEASURING RANGE CO2 measuring range: 385ppm ~ 2000ppmTVOC measuring range: 0.000 mg/m³ ~ 2.000 mg/m³HCHO measuring range: 0.000 mg/m³ ~ 1.000 mg/m³Temperature measurement range: 0℃ ~ 90.0℃ / 32℉ ~ 194℉Humidity measurement range: 0~99%RH FUNCTION BUTTON Mute Button: Turn on or turn off the beeping sound. In silent mode, the mute symbol is not displayed and there is no beeping sound. The beeping sound is turned on by default.Backlight Button: press to turn off or enable the backlight function.Maximum Data Button: View the maximum data in the current test record.Calibration Button: Press and hold for 5 seconds, the air quality data will be cleared and re-tested.Temperature Unit Selection Button: Convert between Celsius and Fahrenheit.Power Button: long press for 5 seconds to hear a beep, turning the power on or off. When turned on, the number on the screen starts from 120 and counts down to 0. (It is recommended to leave it in a ventilated place for 20 minutes before turning it on) DETAILS DISPLAY Digital Temperature and Humidity Sensor Function Button HD Large Screen Rechargeable Battery IMPORTANT HINT Don't let the liquid flow into the inside of the air quality detector.Avoid hitting the sensor with gas higher than the measuring range, as this may damage the sensor.After the air quality tester is left for a long time, odorous gas will accumulate in the meter, which will affect the test results. In this case, the meter must be placed in a cool and ventilated place and then used for more than 1 hour. (No need to operate the instrument during ventilation)Avoid operating the air quality tester in a strong wind environment.Avoid vibration shock and drop.

【5-in-1 Portable Air Quality Monitor】This indoor air quality testing kit provides accurate results for many air quality measurements, including Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compounds(TVOC), Temperature(℃/℉) and Humidity. The home air test kit help monitors air quality and is widely used in the home, office, car, kitchen, bedroom, gym, hotel, camping, party and more.

【30s Countdown & Real-Time Monitoring & Buzzer Reminder】The indoor air quality meter is very sensitive, and it will count down for the 30s after turning on the meter, and the detected data will be clearly displayed on the LCD screen, and the system will evaluate the risk level (GOOD or OK or POOR ) when the value exceeds the normal range, the buzzer will sound quickly. The alarm sound is on by default and can be turned on or off with the mute button.

【Built-in Rechargeable Battery and Low Battery Reminder】The carbon dioxide detector has a built-in rechargeable lithium battery and is packaged with a USB cable. When fully charged, the detector can continue to work for 6-7 hours. When the battery level is too low, the battery box in the upper right corner of the screen will flash to remind the user to charge, and it can be used while charging without affecting the monitoring results.

【High-Precision Sensor and Maximum Value Button】The air quality test kit adopts an updated digital temperature and humidity sensor, and the high-precision sensor identifies and captures different pollutants in the mixed gas to ensure the accuracy of the measurement indicators. The home air quality tester has a MAX button to view the maximum data in the current test record.

【LCD Display and Support Backlight】The handheld air quality tester is made of ABS material, and the excellent performance of high-temperature resistance and impact resistance makes the air pressure meter have a long service life. The large display screen supports LCD backlight to make the operation more convenient and the displayed data clearer and easier to read. Short press the backlight button to turn off or enable the backlight function.