220v Zigbee extender for Smartthings Multipurpose Sensor

Are you in Europe or the US? The device selection does vary somewhat.

In either case, almost all mains powered zigbee devices Will act as zigbee repeaters. That includes plug-in pocket sockets, plug-in sensors, in wall relays, etc.

You just have to make sure that it is using the same profile as SmartThings, ZHA 1.2 ( zigbee home automation)

Once you tell us what region you are in, we can suggest some specific devices. :sunglasses: