MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module
MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module
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Looking to buy MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module at the best price in India? Tech Depot India offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
Specifications
| Sensor Type | MQ-135 Semiconductor Gas Sensor |
| Detectable Gases | NH3, Alcohol, Benzene, Smoke, CO2, NOx |
| Operating Voltage | 5V DC |
| Output Type | Analog (A0) & Digital (D0) |
| Analog Output Voltage | 0V - 5V (proportional to gas concentration) |
| Digital Output | TTL level (High/Low, threshold adjustable via potentiometer) |
| Detection Range | 10 - 1000 ppm (varies by gas type) |
| Preheat Time | ~20 seconds (recommended 24-48 hours for initial burn-in calibration) |
| Heater Power Consumption | <= 800 mW |
| Sensitivity Adjustment | Onboard potentiometer for digital threshold tuning |
| Indicator LEDs | Power LED & Digital Output Trigger LED |
| Comparator IC | LM393 dual comparator |
| Module Dimensions | ~32 mm x 20 mm x 22 mm |
| Pin Configuration | VCC, GND, A0 (Analog Out), D0 (Digital Out) |
| Operating Temperature | -20 degreesC to 50 degreesC |
| Operating Humidity | <= 95% RH (non-condensing) |
| Compatibility | Arduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and other MCUs |
| Origin | Original/Authentic |
Why Choose MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module?
100% Authentic
GST Invoice - A GST invoice is included with every order.
Expert Support - Dedicated technical help on WhatsApp and email.
Pan-India Delivery - Shipped across Bengaluru, Delhi NCR, Hyderabad and all of India.
Trusted by Makers - Used by students, hobbyists and professionals nationwide.
Key Features of MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module
- Multi-Gas Detection: Sensitive to NH3, alcohol, benzene, smoke, CO2, and other harmful gases - one module for broad air quality monitoring.
- Dual Output Modes: Analog output (A0) provides continuous voltage proportional to gas concentration; digital output (D0) gives a clean HIGH/LOW signal when the adjustable threshold is crossed.
- Onboard Potentiometer: Easily fine-tune the digital trigger sensitivity without any additional components - just turn the trimpot with a screwdriver.
- LM393 Comparator: Reliable and fast signal conditioning ensures stable digital output with minimal noise.
- Status LEDs: Power indicator confirms the module is energized; a second LED lights up when the digital threshold is triggered for instant visual feedback.
- Simple 4-Pin Interface: VCC, GND, A0, and D0 - connect directly to any microcontroller's analog and digital input pins with no external circuitry required.
- Fast Response & Recovery: Quick detection response time and reasonable recovery time allow near-real-time gas concentration tracking.
- Wide Compatibility: Works seamlessly with 5V logic (Arduino Uno, Mega, Nano) and can be interfaced with 3.3V boards (ESP32, ESP8266) using a voltage divider on the analog output.
- Compact & Breadboard-Friendly: Small form factor with standard 2.54 mm pin headers fits directly into breadboards and prototyping setups.
Perfect For
- Indoor Air Quality Monitor: Build an IoT air quality station using Arduino or ESP32 that measures harmful gas levels in your home, office, or classroom and displays readings on an LCD or sends alerts to your phone via Blynk or MQTT.
- Smart Smoke & Gas Alarm: Create a safety alarm system that triggers a buzzer, sends SMS/email notifications, or activates an exhaust fan when dangerous gas concentrations like smoke
MQ-135 Gas Sensor Module - NH3, Alcohol, Benzene, Smoke & CO2 Detector
Detect hazardous gases and monitor air quality with the MQ-135 Gas Sensor Module from Tech Depot India, Bengaluru. This versatile sensor responds to ammonia (NH3), alcohol vapors, benzene, smoke, and carbon dioxide (CO2), making it ideal for environmental monitoring, safety systems, and IoT-based air quality projects. Features both analog and digital outputs for flexible integration with Arduino, ESP32, Raspberry Pi, and other microcontrollers.
Frequently Asked Questions
Is technical support available?
Yes, responsive support via email and WhatsApp for setup, troubleshooting, and application guidance.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Customer Support
Email: techdepotindia@gmail.com
WhatsApp: Available for setup and troubleshooting help
Order your MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module today and start building your next project.
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