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symmetrical output characteristics
the LCD can communicate through I2C protocol which requires only 2 pins from the controller side and then uses the PCF8574 IC to receive data from I2C and display them on the LCD screen
It consists of two modules
to provide power supply during power down
CTR : 60% at IF=10mA
MQ-7 Gas Sensor Module for Carbon Monoxide M20 symmetrical output characteristicsMQ7 Gas sensor is another one of Metal Oxide Semiconductor (MOS) type Gas Sensor of MQ Gas Sensors family involving MQ 2, MQ 4, MQ 3, MQ 8, MQ 135, etc. It is mainly used to detect Carbon Monoxide. This sensor contains a sensing element, mainly aluminum oxide based ceramic, coated with Tin dioxide (SnO2), enclosed in a stainless steel mesh. Whenever CO gas comes into contact with the sensing element, the resistivity of the element changes. The change
US$ 25.95
US$ 11.95
US$ 25.00
