Keyestudio KS4028 Manual page 325

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Sensitive 2K Ω -20K Ω (in
Resistance 2000ppm C3H8 )
（Rs）
Features：
(1) Have a signal output instruction.
(2) Dual-channel signal output (analog output and TTL level output)
(3) TTL output effective signal is Low Level. (When the Low Level is output,
the signal light will be on)
(4) The analog output is 0 ~ 5V voltage. The higher the concentration, the
higher the voltage.
(5) a good sensitivity to liquefied gas, natural gas and urban gas.
(6) Have long-term life expectancy and reliable stability
(7) Fast response recovery.
3.Test Code：
The route to get test
File
Type
Hex KS4027
file Tutorial/Makecode
Code/Expansion
codes（How to load?）
Route
folder/Makecode
Projects/Project
File Name
Project 12：Analog
Gas(MQ-2) Sensor.hex
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