I would like to buy one of these kits but I need three adaptors so is it posible to get a single adaptor to go with this kit which is Pass Through
We do not sell powerline devices in single. It is suggested to buy a kit with passthrough function. Or you can check if there is one available on where to buy page on tp-link.com. We have different retailers and they may sell single one for you.
If you are from UK, please check: