![[Discontinued] MQ-138 Formaldehyde Aldehydes Gas Detection Sensor Open Source Hardware or 5V regulated external power](https://cdn.shopify.com/s/files/1/1978/9859/products/4_27_2.jpg?v=1759445285)
![[Discontinued] MQ-138 Formaldehyde Aldehydes Gas Detection Sensor Open Source Hardware or 5V regulated external power](https://cdn.shopify.com/s/files/1/1978/9859/products/1_33_2.jpg?v=1499266692)
![[Discontinued] MQ-138 Formaldehyde Aldehydes Gas Detection Sensor Open Source Hardware or 5V regulated external power](https://cdn.shopify.com/s/files/1/1978/9859/products/2_41_2.jpg?v=1499266692)
Pay in 4 interest-free payments of $4.74 Learn more
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
or 5V regulated external power supply (pin 27)
SainSmart Opto Endstop Switch
shields will be compatible with both boards that use AVR
high current
Response Time:â‰
[Discontinued] MQ-138 Formaldehyde Aldehydes Gas Detection Sensor Open Source Hardware or 5V regulated external powerDescription: For the family, the environment of the volatile compounds detection devices, suitable aldehydes, alcohols, ketones, aromatic compounds detected, the gas sensor test concentration range: 1 to 100ppm benzene Toluene 10 to 100ppm Methanol 5 to 100ppm Alcohol 30 to 300ppm Acetone 10 to 300ppm Formaldehyde 1 to 10ppm Provide a reference routines, circuit diagrams and Other relative information. Specification: Size: 32mm x 22mm x 30mm Main
US$ 43.00
US$ 99.00
US$ 149.00
US$ 59.50
US$ 149.00
US$ 78.00
US$ 131.08
US$ 16.00
