Introduction:
- The gas sensing material used in the MQ-4 gas sensor is tin dioxide (SnO2) with low conductivity in clean air.
- It adopts high quality double panel design with power indication and TTL signal output indication
- It has DO switch signal (TTL) output and AO analog signal output
- The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module)
- The voltage of the analog output, the higher the concentration, the higher the voltage.
- It has good sensitivity to gas and natural gas detection.
- there are four screw holes for easy positioning;
- product dimensions: 32 (L) * 20 (W) * 22 (H)
- has a long service life and reliable stability
- quickly response recovery characteristics
Features:
- Operating Voltage: 5V DC
- Heating Voltage: 5V (high) and 1.4V (low)
- Load resistance: adjustable
- Heating resistance: 33 Ohm
- Warm Up Time: 60s (high) 90s (low)
- Resistance Consumption: approx. 350mW
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