Seven-in-one Air Quality Module (Model: AQM-RK14V) Description The AQM-RK14V seven-in-one air quality module is a cost-effective digital serial port output sensor module, using serial TTL level output mode, integrating CO2, formaldehyde, TVOC, laser PM2.5, PM10, temperature and humidity in one. It can conduct real-time and comprehensive detection of the environment, has good stability, and is very convenient for customers to use. Hotel room air quality monitoring Fresh air ventilation system Air purifier, air conditioner Air quality monitoring equipment Kitchen and bathroom ventilation control system Smart home equipment Environmental monitoring of agricultural greenhouses and outdoor breeding places Features: ● Simultaneously output seven sets of data of carbon dioxide, formaldehyde, TVOC, PM2.5, PM10, temperature and humidity ● High sensitivity and stable data ● RS485 bus and UART TTL level output mode, we can also provide customized services according to customer requirements (such as RS232, WIFI,lora,Cat1). ● The temperature is accurate to 0.1℃, and the humidity is accurate to 0.1% ● The seven groups of monitoring data are automatically output through the UART TTL interface every second ● With power supply reverse conne

Specifications: Measurement Measurement Range Measurement Accuracy Resolution eCO2 1ppm 400～4500ppm ±25% HCHO 1ug/m3 0～2000ug/m3 ±25% TVOC 1ug/m3 0～9999ug/m3 ±25% PM2.5 1ug/m3 0～999ug/m3 ±10% PM10 1ug/m3 0～1000ug/m3 ±10% Temperature 0.01℃ -40℃～100℃ ±0.3℃ Humidity 0.04% 0～100% ±3%RH Physical interface ZH2.54 female Output Data UART Operating Voltage 5.0±0.2VDC Working current ≤60mA 3 minutes (Only eCO2, HCHO and TVOC need to be preheated, other Preheat time parameters will be displayed after power-on) Operating temperature 0℃～50℃ Working humidity ≤95％RH Dimensions 61*48*13mm（L×W×H） Service life...

Note: The eCO2 value and HCHO value output by the module are the equivalent values of TVOC, please pay attention when purchasing and using it. UART interface definition: Interface 1 2 3 4 Features Connect to power DC 5V UART data output pin Signal input pin Signal output pin Communication command: Baud rate Data bit Stop bit Check Digit After the module is powered on, the data is automatically uploaded, the frequency is about 1HZ. Module address version number data data data data high byte low byte high byte low byte

data data data data data data data data data data Checksum TVOC high byte TVOC low byte PM2.5 high byte PM2.5 low byte PM10 high byte PM10 low byte Temperature integer part Temperature fractional part Humidity integer part Humidity fractional part Checksum The temperature is accurate to 0.1℃, and the humidity is accurate to 0.1%. When the bit7 of the temperature data B13=1, it represents a negative temperature, and when the bit7=0 of B13, it is a positive temperature. For example, when B13=9Bh, bit7=1 at this time, it means negative temperature, and the actual temperature is -27℃; if B13=1Bh,...

UART connection diagram: