MQ-135 Air quality and hazardous gas detection sensor
(0 review)

96.93 96.93 ZAR 96.93 VAT Included

99.17 VAT Included

Not Available For Sale

This combination does not exist.

Sensors Module

Internal Reference: SEN-054

MQ-135 Air quality and hazardous gas detection sensor alarm module.

1. Size: 32mm X22mm X30mm length * width * height

2. The main chip: LM393, MQ135 gas sensing probe

3. Operating voltage: DC 5V


1. Signal output indicator instructions;

2. Dual signal output

3. TTL output valid signal is low; (Output low signal light, which can be accessed microcontroller IO port)

4. Analog output with increasing concentration, the higher the concentration, the higher the voltage;

5. Sulfide, benzene Department of steam, smoke and other harmful gasses with high sensitivity;

6. Has a long life and reliable stability;

7. Rapid response recovery characteristics;


A hazardous gas detection apparatus for the family, the environment, suitable for ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other gasses harmful gas detection, gas-sensitive element test concentration range: 10 to 1000ppm

Example code:

int SensorValue;

void  setup ()
  Serial . begin (9600);      // sets the serial port to 9600

void  loop ()
  SensorValue = analogRead (0);       // Read analog input pin 0 
  Serial.println (SensorValue, DEC );  // Prints the value read
   delay (100);                        // Wait 100ms for next reading