MQ3 alcohol sensor Used to measure the level of alcohol in the air/breath or related work Operating voltage: DC 3-5V.

The MQ-6 LPG – Isobutane – Propane Gas Sensor a semiconductor gas sensor that detects the presence of LPG, Isobutane,

Sensitive material of MQ-7 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method

MAX30100 / MAX30102 Pulse Oximeter Heart rate detector sensor module Description This modulе is dеsignеd to mеasurе vital signs, including