MQ 8 HYDROGEN GAS SENSOR MODULE Features

• Voltage :  5V.
• Heating voltage :5V.
• Highly sensitive Hydrogen Gas Sensor Module.
• Gas sensing layer : SnO2.
• high-quality dual-panel design.
• power indicator and TTL signal output instructions.
• Voltage is high , the concentration of the analog output voltage is higher.
• The switching signal having a DO (TTL) output and analog output AO.
• There are four screw holes for easy positioning.