MQ-135 Gas Sensor Module 6W This sensor comes with 4

This sensor comes with 4 screws

The manual mode allows you to turn the knob to different speed and check reaction time

Soldering for Electricians

Battery Type AA Number of Batteries 3 Wire Length Approx 140mm Colour Black Size 57x46x15mm

MQ-135 Gas Sensor Module 6W This sensor comes with 4MQ135 gas sensor module for air quality with digital and analog output. The sensitive material of the MQ135 gas sensor is SnO2, which has a lower conductivity in clean air. When the target combustible gas is present, the conductivity of the sensors increases as the concentration of the gas increases. The MQ135 gas sensor is very sensitive to ammonia and benzene vapors, as well as smoke and other harmful gases. It is affordable and suitable for various