MQ-2 Gas Sensor Module

Adopt the universal 32.768kHz crystal oscillator  With a button cell holder for LIR2032 rechargeable Li-ion battery  Use three lines (CE, I/O, SCLK) to synchronously communicate with CPU, or have a 3-wire interface; support clock signals or RAM data under a multi-byte mode (burst)  5-Pin anti-reverse cable included  Operating temperature: 0°C ~ +70°C  Power: less than 1mW (data and clock information stored) Features An MQ-2 gas sensor module that outputs an analog value when sensing combustible gas. The higher concentration of the gas is, the greater value it will output. When the value exceeds the threshold set, the signal indicator will light up. High sensitivity to liquefied gas, natural gas, town gas, smog, etc. With a comparator LM393 to output both digital and analog signals at the same time Working voltage: 3.3V - 5V; PCB size: 2.3 x 4.0cm Equipped with power light and a signal output indicator  Application Hand-hold devices  Electronic watch  Electronic alarm Package List RTC-DS1302 module x 1 5-Pin anti-reverse cable x 1