This product has been retired from our catalog and is no longer for sale. View the updated version below. N/A
Gas and Smoke Analog Sensor Breakout Board (MQ-2)
SEN-21241
Gas and Smoke Analog Sensor Breakout Board (MQ-2)
SKU: SEN-21241
In stock
SKU
SEN-21241
It's most common use is domestic gas leakage alarms and detectors with a high sensitivity to propane and smoke.
This product has been retired from our catalog and is no longer for sale. View the updated version below. N/A
Product Overview
This is the MQ-2 Gas and Smoke Analog Sensor Breakout Board. It's most common use is domestic gas leakage alarms and detectors with a high sensitivity to propane and smoke. The sensing material is SNO₂ (tin oxide) for which the conductivity is lower in clean environments and higher when smoke or flammable gas is present. This is a low-cost sensor for use in a variety of applications.
NOTE: After the sensor is powered on it needs to warm up around 20S.
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Features & Specs
- Input Voltage DC: 5V
- Power Consumption (Current): 150mA
- Digital Output: TTL digital 0 and 1 (0.1 and 5V)
- Analog Output: 0.1-0.3V (relative to pollution), the maximum concentration of a voltage of about 4V
Customer Reviews

Gas and Smoke Analog Sensor Breakout Board (MQ-2)
SEN-21241
Stock and Customer Discounts
$1.95 retail price.
Available Discounts
- $1.85 | 25+ units
- $1.76 | 100+ units