MQ-9 CO Carbon Monoxide methane liquefied Gas Sensor

MQ-9 MQ9 Carbon Monoxide Gas Alarm Combustible Sensor Module For Arduino

Feature:

• Suitable for home or factory gas leakage monitoring devices.
• Have better sensitivity to CARBON MONOXIDE, METHANE, LIQUEFIED PETROLEUM GAS.
• High quality dual-panel design, with power indicator and TTL signal output instructions.
• DO switching signal (TTL) output and AO analog signal output.
• TTL output valid signal is low. (When the output low signal is on, it can be directly connected micro-controller or relay module.)
• Analog output voltage: the higher concentration, the higher voltage.
• Four screw holes, easy positioning.
• Long life and stability, quick response and resume.