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GPIO: The Pi Zero has the same 40 pins General Purpose Input/Output connections as the Model A+
Operating voltage: DC 5V
Clock frequency: up to 20 MHz
clear color sensitivity
MQ135 Air Quality & Hazardous Gas Detection Sensor Module control kit GPIO: The Pi Zero hasThe MQ135 Air Quality Sensor Module a low cost semiconductor sensor that can detect the presence of Ammonia (NH3), Mono nitrogen oxides (NOx), Alcohol, Benzene, Smoke, Carbon dioxide (CO 2), etc. This module provides both digital and analog outputs. MQ135 Air Quality Sensor module can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi, etc. Suitable for home or industrial on LPG, natural gas, coal gas monitoring devices.
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