The MQ-5 LPG and Natural Gas Sensor is a semiconductor gas sensor using a tin dioxide (SnO2) sensing element that detects LPG and natural gas concentrations from approximately 200 to 10,000 ppm, providing an analog output voltage, operating at 5V DC with around 150mA power consumption and tolerating ambient humidity up to 95% RH. The mq5 gas sensor sensing element requires an onboard heater to reach its operating temperature — the majority of the 150mA current draw powers this heater rather than the signal circuit itself, which is a key difference from low-power analog sensors like LDRs or FSRs.
The lpg gas sensor analog output resistance decreases as gas concentration increases, and this resistance change reads as a rising voltage on Arduino’s analogRead() through a load resistor voltage divider. A critical point for any mq5 gas detector sensor: the sensing element requires a burn-in period of 24 to 48 hours on first power-up for the SnO2 surface to stabilise, and even after burn-in, each power-on requires several minutes of heater warm-up before readings stabilise — readings taken immediately after power-up will be unreliable. The mq 5 gas detector and mq5 sensor both follow this same warm-up requirement.
the 150mA heater current makes this mq 5 gas sensor unsuitable for low-power battery applications requiring long standby times — continuous operation drains batteries quickly. This StemVolt sensor is well-suited for engineers building gas leak detection alarms and practical safety monitoring electronics projects.
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- Checkout The MQ-5 Gas Sensor ModuleÂ
Features:
- SnO2 sensing element detects LPG and natural gas 200-10000ppm
- Analog output resistance decreases as gas concentration increases
- Onboard heater requires 24-48hr burn-in plus per-power-on warm-up
- 5V DC at ~150mA — mostly heater, not low-power suitable
- 95% RH humidity tolerance suits kitchen and humid environment use
Technical Specifications:
 Applications:
- MQ-5 Sensor used for Arduino LPG cylinder leak alarm build
- College project uses mq5 gas sensor for gas detection safety demo
- Kitchen safety uses lpg gas sensor for India household leak alert
- IoT monitor uses mq5 gas detector sensor for remote gas level logging
- Industrial setup uses mq 5 gas detector for natural gas leak detection
Package Includes:
- 1 x MQ-5 LPG and Natural Gas Sensor
Satyendra Dalal –
Received this MQ-5 gas sensor with professional packing, gas detection was accurate and it worked perfectly for my electronics project testing.
Bhupendra Phogat –
This sensor provides reliable LPG and methane gas detection, making it suitable for electronics projects, safety systems, and educational experiments
Rajendra Ahlawat –
Highly recommended product
Sukhvinder Malik –
Product as shown
Jogendra Hooda –
Secure UPI payment and helpful customer support ensured a smooth purchasing experience, while the sensor delivered stable and consistent performance
Virendra Kadyan –
Quick shipping service
Dinesh Sanghvi –
Easy LPG and natural gas sensor working principle makes it a great choice for students learning gas sensing and monitoring applications
Jitendra Verma –
Professional packing done well