They are compatibel with HUE and KaKu.
After reset the unit i can connect them to the ICS2000 (Zigbee Light On/Off)
After reset i can't connect with the default HUE app. (Searching new light).
The solution that worked for me was using the Hue Essentails App.
- Reset the device
- Connect the Smart Switch to a power suply
- Place the smartswitch close to the HUE bridge Less then 30cm
- In the Essentials App select Add Device
- Select Plugin Outlet
- Select the HUE bridge
- Press the Tochlink Button
- When you hear the switch swithcing. Select Find LIghts