# Gas Sensor MQ-5 natural gas, LPG, coal smoke

> MQ-5 gas sensor for detecting natural gas, LPG and coal smoke, suitable for Arduino projects and safety systems. Power supply 5VDC, consumption approx. 150mA. Provides analog output 0-5V proportional to concentration and TTL digital output for thresholds. Good resistance to alcohol and smoke interference.

- Page: https://sigmanortec.ro/en/gas-sensor-mq-5-natural-gas-lpg-coal-smoke
- Price: 12.63 RON
- Availability: In stock; 1-2 zile
- Reference: 22134 · EAN: 5949260054246
- Category: Mechatronics and IoT > Sensors and Modules > Gas and Air Quality Sensors
- Package (shipping data): 0.007 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Ideal for Arduino projects and security systems, detects natural gas, LPG and coal smoke quickly and stably. Powered by 5VDC, consumption approx. 150mA, offers 0-5V analog output proportional to concentration and TTL digital output for thresholds, has good resistance to alcohol and smoke interference.
MQ5 sensor used to detect natural gas, LPG and coal smoke.
Specifications:
Excellent resistance to interference with alcohol and smoke
Supply voltage: 5VDC, 150mA
Output: Digital pin or Analog pin
Analog Output: 0 - 5V; the voltage increases or decreases depending on the detected concentration
TTL Digital Output
Analogue reading code example:
void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}
// the loop routine runs over and over again forever:
void loop() {
// read the input on analog pin 0:
int sensorValue = analogRead(A0);
// print out the value you read:
Serial.println(sensorValue);
delay(1); // delay in between readings for stability
}