Gas Sensor

• Indication of the signal output.
• Dual signal output (analog output, and TTL level output)
• TTL output signal is low. (When low output signal light, and can be connected directly to the microcontroller)
• 0 ~ 5V analog output voltage, the higher the concentration, the higher the voltage.
• Liquefied petroleum gas, natural gas, city gas, better sensitivity.
• Has a long life and reliable stability
• Fast response and recovery characteristics
• Operating voltage: DC 5 V

• Its dimensions are 36 x 20 x 21 (LxWxH)
• Its weight is 8gm.
• Its operating voltages are plus 5V.
• It can be used to detect LPG, Alcohol, Propane, Hydrogen, CO, and even methane.
• Its analog output voltages are 0V to 5V.
• Its digital output voltages are 0 to 5V.
• Its preheat duration is 20 seconds.
• This sensor can be used as a digital or analog sensor.
• Its sensitivity can be varied by the potentiometer.

MQ-7 carbon-monoxide sensor module with analog response and an adjustable digital threshold output for Arduino-compatible educational monitoring prototypes. Correct heater cycling, warm-up and calibration are required. This module is not a certified carbon-monoxide alarm and must not be used as life-safety equipment.