Sorry, could you please ask question in english ,we can only understand english here.Thanks

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Hi There, We cannot change the channel for Our Extender, it will always have the same channel with your router. And if you want to setup static IP for device which connected to RE450, you need to do...

Hi Trev, If you cannot control the lights by the smart switch, please check if you are on the latest firmware, if it's not latest , please upgrade the firmware , about how to upgrade the firmware,...

Hi There, Let me confirm some information. Actually the two switch has already been setup successfully and you can control it by Kasa APP. But if you are close to first switch,you will lose the Wi-Fi...

Hi Jordan, For this case, the best solution might be just identify the length and width of the wall plate you need and then purchase the particalr wall plate on online store.