MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module iot Connect the ULN2003 input pins

Connect the ULN2003 input pins (IN1-IN4) to four digital GPIO pins on your Arduino or microcontroller

and sensor nodes with BLE provisioning for easy setup

3D Printer & CNC Controller

ensuring perfect frame alignment and eliminating wobble or vibration issues that plague lesser designs

Each relay channel is rated for AC 250V/10A or DC 30V/10A switching capacity

MQ-135 Gas Sensor Module For NH3, Alcohol, benzene, smoke , CO2 Detector Module iot Connect the ULN2003 input pinsMQ 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 The Engineer Store, 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