Hello @Simon2 Create a wireless-network for your bulbs only and set that to 2.4GHz band only. It will also allow you to set other regulations for the bulb-network. Your main wireless-network can run on Dual Band Operation or any other Radio Setting you prefer. More info can be found here Meraki Go - WiFi Access Point Feature Details - Cisco Meraki and here Meraki Go - Creating and Deleting Wireless Networks - Cisco Meraki Cheers
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