Sound Detection Sensor Module 4-Pin
Sound Detection Sensor Module 4-Pin Original price was: 50,00 EGP.Current price is: 40,00 EGP.
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MQ-2 Smoke and Flammable Gas Sensor Module
MQ-2 Smoke and Flammable Gas Sensor Module Original price was: 70,00 EGP.Current price is: 55,00 EGP.
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MQ-135 Air Quality Gas Sensor Module

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SKU: 7153721

Original price was: 80,00 EGP.Current price is: 65,00 EGP.

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The MQ-135 Air Quality Gas Sensor Module uses an MQ-135 tin-dioxide sensing element to detect a broad range of harmful gases, including ammonia, NOx, benzene, smoke and CO2. It is widely used in indoor air-quality monitors and gas-leak alarm projects.

Key features:

  • Broad Gas Detection: Senses ammonia, sulphide, benzene, smoke and CO2 with good sensitivity across a wide concentration range.
  • Dual Signal Output: Provides an analog output (AO) for concentration readings and a digital output (DO) for threshold alerts.
  • Adjustable Sensitivity: An onboard potentiometer sets the digital output trigger point.
  • Stable, Long Life: The sealed sensing element offers long-term stability and a long service life under continuous operation.
  • Fast Response: Reacts quickly to changing gas concentrations, making it suitable for real-time monitoring.
  • Standard 4-Pin Header: VCC, GND, DO and AO pins connect straight to Arduino, ESP32 or Raspberry Pi.

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Specification

Technical Specification

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

Display

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

RAM

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

Storage

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

Video Card

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

Connectivity

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

Features

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

Battery

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

General

Supply Voltage

5V
Output Type

Digital (DO) and Analog (AO)
Detection Gases

NH3, NOx, Benzene, Smoke, CO2
Detection Range

10 to 300 ppm (NH3)
Sensitivity Adjustment

Onboard potentiometer
Preheat Time

20 seconds minimum

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Output Type

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