CONTROL YOUR ELECTRONIC APPLIANCES FROM ANY PLACE IN THE WORLD A great app what can do a loot of staff WHEN PUSH THE BUTTON IT WILL SEND TO YOUR ESP32 OR ARDUINO BY BLUETOOTH - 222:on OR 222:off WHERE :222 -is the ID of your SWITCH where you enter when "add switch" // this code is in method loop if (SerialBT.available()) { // this is for esp32 String bluetoothData = SerialBT.readString(); // get data from bluetooth if(bluetoothData.indexOf("222:on") > 0){// when turn on