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

For home or factory gas leakage monitoring devices, suitable for carbon monoxide and other combustible gases and monitoring devices - 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 light is on, it can be directly connected microcontroller or relay module) - Analog output voltage: the higher the concentration, the higher the voltage - Have better sensitivity to carbon monoxide detector - Four screw holes, easy positioning - Product Dimensions: 32 (L) * 20 (W) * 22 (H) - Long life and stability - Quick response and resume - Electrical performance: - Input voltage: DC5V - Power (current): 150mA - DO output: TTL digital 0 and 1 (0.1 and 5V) - AO Output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V - Special note: When the sensor is powered, it needs to be warmed up about 20S, so the measured data becomes stable, the heat sensor is a normal phenomenon, because its inside is with an electric wire, if not, unnormal. Specifications - Product Model：MQ-9 - Product Type：Semiconduct-gassensitive element - Gas Detected：Carbon monoxide，Combustible gas - Detectable Concentration：10-1000ppmCO, 100-10000PPM gas Package Included: 1 x MQ-9 MQ9 Carbon Monoxide CO Alarm Combustible Gas Sensor Module for Arduino