EC Buying MS1100 Gas Sensor, VOCs Sensor for Air Quality, Carbon Dioxide Formaldehyde Monitoring TVOC CO2 Gas Sensor Module, Sensor Arduino I2C

Instructions for use: 1. Power supply voltage: +5V 2. AOUT: Analog output, voltage value change corresponding to gas quantity detected by chip, single chip can connect directly using ADC. 3. DOUT: Digital output is the result of comparing the output voltage values of AOUT and adjustable resistor, output semaphores 0 and 1. 4. Adjust the adjustable resistor of the module. When the output voltage of the adjustable resistor is less than AOUT, the output of DOUT is high level, while the LED lamp is on; On the contrary, DOUT output is low and the LED lamp is off. 5. Variable resistance value: 4K ohms 6. Voltage in clean air:<1V 7. response speed:<5S 8. Working temperature: -10 ? ~ 60 ? 9. Working humidity: 90% RH 10. Size: 1.5mm X2.5 mm Precautions for module use: When it needs to be used, the module needs to be preheated for 3-5 minutes before relevant measurements are made. Pin Description: VCC:5V GND:GND AOUT:AD input pin. DOUT: Any available pins