The crowtail- Gas Sensor(MQ9) module is useful for gas leakage detection (in home and industry). It is suitable for detecting LPG, CO, CH4. Due to its high sensitivity and fast response time, measurements can be taken as soon as possible. The sensitivity https://elecena.pl/product/7560009/crowtail-gas-sensor-mq9-2-0 2017-02-01 https://elecena.pl/product/7560009/crowtail-gas-sensor-mq9-2-0 2025-12-17