Main processor: LM393, MQ-135 gas sensor

Operating voltage: DC 5V

Output signal indicators:

• Dual output signal (analog output and TTL level output).
• Valid TTL output signal is low level.
• Analog output increases with concentration, higher concentration means higher voltage.

Features:

• High sensitivity and good selectivity for sulfur compounds, aromatic compounds, smoke, and other harmful gases.
• Long lifespan and reliable stability.
• Fast response and recovery characteristics.

Size: 36mm X 24mm X 25mm (L * W * H)

Applications: Hazardous gas detection device for home and environmental use. Suitable for detecting ammonia, aromatic compounds, sulfur, benzene vapors, smoke, and other harmful gases.

Concentration range: 10 to 1000ppm