The MQ-131 is an ozone gas sensor that uses tin dioxide (SnO2) as its sensitive material. It operates by detecting changes in conductivity when exposed to ozone gas, providing a reliable output signal that corresponds to the concentration of ozone in the environment. This sensor has high sensitivity to ozone and can also detect strong oxidizing gases like chlorine and nitrogen dioxide. It reacts in the opposite direction to organic interfering gases, making it ideal for accurate ozone detection. With a wide detection range from 10 PPB to 2 PPM, the MQ-131 is commonly used in environments where ozone monitoring is critical, such as in household and industrial settings. The sensor is designed with dual signal outputs (analog and TTL) and features fast response and recovery times for quick and accurate ozone concentration measurements.

Key Features:

1. Dual Signal Output: Provides both analog and TTL level outputs for versatile integration.
2. Low-Level TTL Signal: TTL output provides a valid signal at a low level, indicating gas presence (easily interfaced with microcontrollers).
3. High Sensitivity: Highly sensitive to ozone gas with a detection range from 10 PPB to 2 PPM.
4. Stable and Reliable: Long service life with excellent stability and fast response/recovery times.
5. Easy Installation: Equipped with mounting holes for easy fixation, and a removable probe for easy testing.

Applications:

• Household Ozone Monitoring: Used for detecting ozone concentrations in residential areas, with an alarm system for exceeding safe limits.
• Industrial Ozone Detection: Essential in industries where ozone concentrations need to be monitored to ensure safety.
• Portable Ozone Detectors: Used in portable devices for on-the-go ozone concentration monitoring.