MG811 Module, Air Carbon Dioxide/CO2 SensorFeatures-Wide detecting scope.High sensitivity & stability.Simple drive circuit.Digital output: Active low (When it outputs a low-level signal, the indicator LED will be on)Analog output: Two Range Options: 0 to 2V or 0V to 4V. The default is 0V to 2V D..
MH-Z19 Infrared CO2 Sensor Module for CO2 monitorFeatures-High sensitivity, high resolution.Low energy consumption.Output mode: UART and PWM wave.Temperature compensation, excellent linear output.Good stability...
MQ 135 Air Quality/Gas Detector Sensor Module For ArduinoFeatures-Sensitivity to Ammonia, Sulphide, and Benzene steamWith signal output instructionsThe TTL output signal is a low levelAnalog 0 ~ 5 v voltage output, the higher the concentration, the higher the voltageColor is showing pictures...
MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector ModuleFeatures-Good sensitivity to Combustible gas in a wide rangeHigh sensitivity to LPG, Propane, and HydrogenLong life and low costSimple drive circuitCan be used as a Digital or analog sensor..
MQ-3 Alcohol Detector Gas Sensor ModuleFeatures-Signal output light indicator.Analog and level signal output.TTL output valid signal is low. (When the output low signal light can be directly connected to microcontroller or relay module).The carbon monoxide detection with better sensitivity.It ..
MQ-4 High Sensitivity Gas Methane (CNG) Detector Sensor ModuleFeatures-Signal output indicatorDual Signals output (analog output and TTL output)The TTL output signal is low level, allows to connect with SCM directlyAnalog output 0~5V voltageHigh sensitivity..
MQ-6 Liquefied Petroleum Isobutane Propane Gas Sensor moduleFeatures-Good sensitivity to Combustible gas in a wide rangeHigh sensitivity to Propane, Butane, and LPGLong life and low costSimple drive circuitAn indication of the signal output..
MQ-7 CO Carbon Monoxide Coal Gas Sensor ModuleFeatures-The analog output voltage, the higher the concentration the higher the voltage.The carbon monoxide detection with better sensitivity.There are four screw holes for easy positioning.With a long service life and reliable stability.Rapid response a..
MQ-8 Hydrogen Gas Sensor Module H2 Alarm DetectionFeatures-Using the high-quality dual-panel design, with power indicator and TTL signal output instructions.The switching signal having a DO (TTL) output and analog output AO.TTL output valid signal is low. ( Low-level signal when the output light can..