MQ-4 Gas Sensor Module
SKU: SEP-14
- Input Voltage & Power Consumption: DC 5V, with a current consumption of 150mA.
- Outputs: TTL digital signal (DO) with 0.1V for low and 5V for high, and analog output (AO) ranging from 0.1V to 0.3V, reaching up to 4V at maximum gas concentration.
- Warm-Up Time: Requires a 20-second warm-up period for stable readings; heating is normal due to the internal heating wire. Excessive heat may indicate a malfunction.
- Size & Package: Sensor dimensions: 32(L) x 20(W) x 22(H) mm / 1.26″ x 0.79″ x 0.76″. Package includes 2 x MQ-4 sensor modules.
€1,94
The MQ-4 gas sensor uses tin dioxide (SnO2) as its sensitive material, with lower conductivity in clean air. When exposed to combustible gases, its conductivity increases in proportion to their concentration, and this change can be converted into a corresponding output signal using a simple circuit. The sensor is highly sensitive to a variety of combustible gases.
Features:
- Sensitive Material: Uses tin dioxide (SnO2) with low conductivity in clean air.
- High Sensitivity: Detects a wide range of combustible gases, with conductivity increasing as gas concentration rises.
- Output Signal: Converts changes in conductivity into an output signal, using a simple circuit.
Applications:
The MQ-4 sensor is commonly used for detecting natural gas, methane, and other combustible gases in applications like gas leak detection, home safety systems, and industrial monitoring.
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