MQ-3 Alcohol Detector Gas Sensor Module
₹105.00
- Signal output light indicator.
- Analog and level signal output.
- TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module).
- The carbon monoxide detection with better sensitivity.
Description
MQ-3 Gas Sensor Module
This is the MQ-3 Gas Sensor Module, which is simple to use. It can sense the presence of Alcohol in the air. The module uses our MQ-3 sensor. It simplifies the interface to the odd pin spacing of the sensor and provides an interface through standard 4 x 0.1″ header pins. MQ-3 gas sensor provides an analog output corresponding to the concentration of the gas in the air and an easy-to-use digital output.
The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. Its conductivity increases as the concentration of alcohol gasses increases. It has a high sensitivity to alcohol and has good resistance to disturbances due to smoke, vapour and gasoline. MQ-3 gas sensor module provides both digital and analog outputs. It can be easily interfaced with Microcontrollers.
Key Features:
- Semiconductor Sensor Type
- Simple SIP header interface
- Compatible with the majority of microcontrollers
- Mode of low-power standby
- Heater voltage is required
- Excellent sensitivity to alcohol gas
- High sensitivity and rapid response
- Longevity at a low cost
MQ-3 Gas Sensor Module Pin Diagram:
MQ-3 Gas Sensor Module Pin Description:
| Pin Number | Pin Name | Description |
| 1 | VCC | This pin provides power to the module; the typical operating voltage is +5V. |
| 2 | GND | This pin Connects the module to the system ground. |
| 3 | DO (Digital Out) | You can also use this sensor to get digital output from this pin by adjusting the potentiometer. |
| 4 | AO (Analog Out) | Based on the intensity of the gas, this pin outputs a 0-5V analogue voltage. |
Applications
- Car alcohol alarm
- Breathalyzer
- Alarm for exceeded gas level
- Portable alcohol detector
- Stand-alone/background sensing device
- Environmental monitoring equipment
Package Includes:
- 1 x MQ3 Gas Sensor
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