[Discontinued] MQ-138 Formaldehyde Aldehydes Gas Detection Sensor Open Source Hardware Red refers to errors

Red refers to errors

Operating Voltage: 5V

1x Distance Sensor

SainSmart Opto Endstop Switch

Input impedance

[Discontinued] MQ-138 Formaldehyde Aldehydes Gas Detection Sensor Open Source Hardware Red refers to errorsDescription: For the family, the environment of the volatile compounds detection devices, suitable aldehydes, alcohols, ketones, aromatic compounds detected, the gas sensor test concentration range: 1 to 100ppm benzene Toluene 10 to 100ppm Methanol 5 to 100ppm Alcohol 30 to 300ppm Acetone 10 to 300ppm Formaldehyde 1 to 10ppm Provide a reference routines, circuit diagrams and Other relative information. Specification: Size: 32mm x 22mm x 30mm Main