Digital & Analog Out MQ135 Sensor

1. 1
Visit us @ www.thearyatechnologies.com
Email: aryaprotech@gmail.com info@thearyatechnologies.com Contact us@ 0253-2512131
ATK-MQ135-GAS SENSOR GAS SENSOR
Overview
MQ-135 is a simple-to-use Ammonia (NH3) gas sensor, suitable for sensing ammonia concentrations in the air. The MQ-135 can detect ammonia gas concentrations up to 100ppm. MQ-135 gas sensor has are suitable for detecting of NH3, NOx, alcohol, Benzene, smoke, CO2, etc. Features
 Operating voltage: 5V
 Provide both digital and analog output
 Adjustable sensitivity
 Output LED indicator
 Compatible with Arduino and Microcontroller
 TTL Compatible
 Onboard holes for easy installation

2. 2
Applications
 Domestic air pollution detector.
 Portable Gas Detector.
Specifications Parameter Min Typ Max Units
Working Voltage
4.5
5
8
Volts
Range
0-4.6
Volts
Pin Diagram
Pin Pin Name Pin Name
+5V
I/P
Regulated 5V supply input
GND
GND
Ground level of power supply
DO
O/P
Digital Output to external devices
AO
O/P
Analog Output to ADC
Note: Initially the sensor gives high output so power on the sensor for 15minites because it needs initially heating voltage then and then it gives proper output. More info refer the datasheet for the same. Recommend separate power supply because its required more current to heat.