MQ3 Alcohol Sensor Module

The MQ-3 alcohol sensor is suitable for detecting alcohol or ethanol concentration in your breath, just like a normal breathalyzer. It has high sensitivity and fast response time. The sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor.

SKU: 40

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  • Warranty 1 year
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Description

Features of MQ-3 Alcohol Sensor

  • Sensor Type – Semiconductor
  • Easy SIP header interface
  • Compatible with most of the microcontrollers
  • Low-power standby mode
  • Requires heater voltage
  • Good sensitivity to alcohol gas
  • Fast response and High sensitivity
  • Long life and low cost
  • Requires simple Drive circuit

Specifications of MQ-3 Gas Sensor

  • Power requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off)
  • Current Consumption: 150mA
  • DO output: TTL digital 0 and 1 ( 0.1 and 5V)
  • AO output: 0.1- 0.3 V (relative to pollution), the maximum concentration of a voltage of about 4V
  • Detecting Concentration: 0.05-10mg/L Alcohol
  • Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
  • Heater consumption: less than 750mW
  • Operating temperature: 14 to 122 °F (-10 to 50°C)
  • Load resistance: 200kΩ
  • Sensitivity S: Rs(in air)/Rs(0.4mg/L Alcohol)≥5
  • Sensing Resistance Rs: 2KΩ-20KΩ(in 0.4mg/l alcohol)
  • Dimensions: 32 x 22 x 16 mm

Specification

Processor

Display

RAM

Storage

Video Card

Connectivity

Features

Battery

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