Lightwave Smart Relay with Open/Stop/Close

Model LP82

This little device can make your traditional electric curtains, doors, gates and a lot more in to smart devices. It takes a maximum load of 500W which is good enough for most electrical usage. The automations you can do with this device is unlimited with the help of the Lightwave app, let your creativity go crazy. 

Note that Apple HomeKit does not support "Open/Stop/Close" but you still have "On/Off" functionality. You can set up all the other automations on the Lightwave app.