I need to receive input from a device. I'm not sure what this device is called yet, but I know it can make a lot of other devices (such as public sinks, paper towel dispensers, and air hand dryers) touchless. It can make them touchless because it knows when something (such as a hand) is waved in front of them. Because I don't know what this device is called, I'll refer to it as the first device.
In addition to a speaker that plays the sound of my voice
I also need the amount of time after something is waved in front of the first device to be kept track of.
Please call that amount of time "x".
And, I need the sound of my voice to be played, with a changed volume, when something is waved again in front of the first device, AND when x is greater than one amount of time, AND when x is lesser than another amount of time.
I need these two output devices to be far away from the first device.
How much is this going to cost?