Send the following on WhatsApp
Continue to ChatUsing one button to toggle another device (approach 2) https://ewelinkcommunity.net/knowledgebase/using-one-button-to-toggle-another-device-approach-2/
Using one button to toggle another device (approach 2) https://ewelinkcommunity.net/knowledgebase/using-one-button-to-toggle-another-device-approach-2/