Good day! I would like to ask if it is possible to install a MQ 6 gas sensor, a buzzer, a LED display, Auto shut off valve, and Auto fire extinguishing system to an Arduino Uno? I'm planning to make a Prototype Gas Leak and Smoke Detector with Buzzer Alarm and Auto Firefighter System for My SIP project. Is it possible ta install all of these? Thank You! Hope you could help me. 
Is it possible ta install all of these?
Yes.
Skuster_duchess:
Good day! I would like to ask if it is possible to install a MQ 6 gas sensor, a buzzer, a LED display, Auto shut off valve, and Auto fire extinguishing system to an Arduino [driver booster](https://ffile.me/driver booster/) Uno? I'm planning to make a Prototype Gas Leak and Smoke Detector with Buzzer Alarm and Auto Firefighter michaels worksmart System for My SIP project. Is it possible ta install all of these? Thank You! Hope you could help me.
Yea it may be. But you've to hang on to it.
Yes it is possible, however the hardware is not qualified to do this in practice however it is a good learning project. False alarms will cause you problems with the authorities. I have no idea what the Auto fire extinguishing system is.
Good Luck & Have Fun!
Gil