Sensor Module Mq137 500Ppm Replacement Sensors

Selling Summary: Efficient and easy to use, Selling Description The is to configure and easy to use. Even technical novices can easily get started and meet your various needs. Stable Outputs: Designed to have DO TTL output and analogue output, the analogue output voltage changes with concentration. Utility: Able to to single chip microcomputer or relay , which are not included, the gas enables wide application. Main Function: The gas detection can for test the gas concentration to for ensure timely understanding of the gas content in the environment. Great Accuracy: Comes with 5‑500ppm measurement range, the gas also supports automatic calibration for easy and high accuracy.