The MQ-8 is a hydrogen gas sensor that is designed to measure the concentration of hydrogen gas in the air. It has a detection range of 100 to 1000ppm. The sensor module has both digital and analog outputs for convenience. The digital output threshold level can be adjusted with the preset on the board, and it can be easily integrated with microcontrollers, Arduino, and other systems. The main chip used in the module is the MQ-8 gas sensor, and it operates on a 5V DC voltage. The analog output provides a continuous signal, while the digital output is indicated by a low signal when hydrogen gas is detected.

Features:

compatible with Arduino
compatible with Raspberry Pi only in combination with part no. RPI ADC (see accessories)
100 – 1000 ppm measuring range
high sensitivity (adjustable via potentiometer)
fast response time
evaluation of measured values from microcontroller (analog)
threshold setting possible (digital)
24 V loop voltage
5 V heating voltage
29 Ohm heating resistor at room temperature
<900 mW Heizleistung
-10 – +50 °C Betriebstemperatur