Sensor for measuring the concentration of benzone, alcohol, smoke in the air e.g. to detect gas leaks. (gas alarm) or to measure the air quality. The threshold value from which the module responds can be adjusted via a potentiometer. Please note that the sensor is heated up and operated warm. Exact measurement results are only delivered when the sensor is warm. Technical data - Measuring range gas concentration: approx. 10 ... 10.000 ppm - Input voltage (VCC) : 5 V - GND: ground connection - AOUT: Analog output (0.1 ... 4 V) - DOUT: Digital output (1/0 0.1V/5V) - Dimensions (LxWxH): 32 x 22 x 27 mm Note Attention: The sensor gets warm during operation!