Air Quality Monitor Indoor AQI Dust Meter Pollution Tester Particle Counter (PM+TVOC+HCHO+CO2)

Checking the air quality in your home

• Fine dust level - Laser particle sensor to accurately distinguish 0.3 fine particulate matter;
• Formaldehyde test - Electrochemical HCHO sensor to resolve 0.001mg/m3 of free formaldehyde molecules;
• TVOC test - Semiconductor TVOC total volatile organic compounds sensor can measure a variety of chemistry pollution such as benzene toluene.
• CO2 level - NDIR non-spectral infrared principle CO2 sensor to accurately detect indoor carbon dioxide concentration.
• Self -calibration- TVOC HCHO CO2 Automatic calibration

Instructions for Use:

1. TF memory card can recordair quality test data of PM1.0 PM2.5 PM10 CO2 TVOC HCHO particles numbers 0.3 0.5 1.0 2.5 5.0 10
2. For Initial use place the device in a well-ventilated environment for 8hrs before use
3. When you use the BR-A air quality monitor please shut it down regularly.
4. If the TF memory card is full please replace it with a new card in time. Otherwise there may be a sudden automatic shutdown of the machine.

Fault description:

The machine suddenly shut down by itself or plug it in and it won't charge try the following steps to rectify the fault:

1. Take out the TF memory card on the back of the machine
2. After power off connect the charger to charge for more than 6 hours and then turn it on without the TF memory card to see if it can work.

6-channel particle high precision laser sensor laser particle counter

• PM0.3
• PM0.5
• PM1.0
• PM2.5
• PM5.0
• PM10

• More sensitive measurement
• Faster algorithm response
• High frequency data processing speed

About battery and charging:

1. A18 has multiple built-in sensors the power consumption is very high please make sure to use a 2A adapter to charge it. Please do not use USB power supply such a charging power is too small.
2. In the power-on state if the power of the adapter is too small the charging speed will not keep up with the discharging speed when the machine is in use and the machine will automatically shut down.
3. If the machine shuts down automatically please charge the machine for more than 6 hours in the shut down state before turning it on again.
4. When the machine is turned on and used it takes about 18 hours before the machine can be fully charged. So we generally recommend turning off and charging.

Regarding machine reading is high on first use

• Reason:Because the packaging material itself contains interference gas and it is sealed in the box for a long time the charge attached to the surface of the sensor will increase causing the value of the machine to be biased when it is turned on.
• Solution:After receiving the machine put it in an outdoor clean and ventilated environment for about 8 hours so that the charge can be released. (Charger can be connected to ensure the power supply)

Regarding the high TVOC level

• Please check your measuring point if there are some human activities such as cooking smoking drinking or some chemical gases such as perfume air freshener detergent etc.Then try to put the machine in an outdoor clean and ventilated environment for more than three hours to see if the machine value will drop.

6-channel Particle Number

48MHZ high frequency processing speed

Indoor Air Quality Sensor