A Question for Intelligent people (everyone can try)?

Question

where can i purchase a dollar operated machine (that I connect to another machine for example an air conditioner) that works according to time for example I put in $1.00 the machine will work for 5 minutes (something like a meter)

Answer 1

Can I try?

Fan. No need even a cent to put. The fan will stop automatically if we set the time. It's cheaper than air conditioner.

Answer 2

You didn't specify what you would like for the lock to do. Since you listed it under business I'm guessing you have a product or business idea. If so follow the link below. They have many types of locks. If you can't find what you are looking for, they can even help you get a product ready for production.

Answer 3

Go to a laundro-mat and get the name of the company the off machines there.