Product description
Formaldehyde, benzene, toluene, and acetone sensor based on the MQ138. The module features a built-in microcontroller that provides pre-calibrated measurement values via the Qwiic interface, eliminating the need for analogue signal processing and manual calibration. The sensor is intended for indoor air quality monitoring, smart home systems, and industrial applications. It includes an LED indicator that lights up when harmful VOC gases are detected. The sensor requires an initial warm-up period of 48 hours before first use and approximately 5 minutes before each subsequent use.
Specifications:
- Sensor: MQ138
- Detects: Formaldehyde, benzene, toluene, and acetone
- Communication: I2C via Qwiic
- Supply voltage: 3.3 V
- Built-in microcontroller with pre-calibrated measurement values
- LED indicator for VOC gas detection
- Qwiic connectors: 2
- Mounting holes: 4
- Dimensions: 54 × 22 mm
- Arduino library available: Yes
- Supplied with: Pin header (not pre-soldered)