The Iris buttons are generally considered junk around here.
I bought several before I (and my not happy family) realized how unreliable they are, and they are all now removed from my network and sitting in a box somewhere.
You can find the four button Aeon Minimote v1 for around $15 dollars (best deal I saw recently was two for $30, I think) these days. They are a far superior four-button device, but they are also all old stock, so the batteries tend to be dead/unchargeable, which requires a battery replace. There is a thread on this forum regarding where on eBay to order the batteries (I think it’s about $11 for five batteries) and the process to change the batteries it’s very easy.
I have 8 minimotes in use, have changed the batteries in five and have more batteries coming for the other three. I love the minimotes…they hold a charge well, are reliable, and my family likes that they can put them where they want them, particularly useful when a wall switch or lamp switch is in a bad position/out of reach. I have deployed them in sets in rooms…for example I have three in our office, one at my wife’s desk, one at my son’s desk, and one in the TV area, all programmed w/the same options to manage the lights in that room so they can pick up any minimote they want in the office and get the same light control experience.
I keep the programming simple for my family (usually only discuss simple press actions for the four buttons) but code some additional capabilities for the “hold” option for each button for me.