Arduino Bluetooth Automation is used to control the five devices connected to the controllers like Arduino or any other controller wireless using Bluetooth module.
When each button is pressed, corresponding button number value will be sent along with on/off values. For example, if switch ON button 1 then 11 will be sent if you switch OFF button 1 then 10 will be sent. Other values are given below.
Switch 1 ON - 11 Switch 1 OFF - 10
Switch 2 ON - 21 Switch 1 OFF - 20
Switch 3 ON - 31 Switch 1 OFF - 30
Switch 4 ON - 41 Switch 1 OFF - 40
Switch 5 ON - 51 Switch 1 OFF - 50

Example Arduino Code with LCD is given below:

#include "Arduino.h"

#include
#include
#include

const int output1 = 6, output2 = 7, output3 = 8, output4 = 9;
const int input1 = 14, input2 = 15;

String data;

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
SoftwareSerial mySerial(9, 10);
SimpleTimer timer;

void repeatMe() {
lcd.setCursor(0, 1);
if(digitalRead(input1) && digitalRead(input2)){
mySerial.print("00");
lcd.print("IN1:NO , IN2:NO ");
}
else if(!digitalRead(input1) && digitalRead(input2)){
mySerial.print("10");
lcd.print("IN1:YES, IN2:NO ");

}
else if(digitalRead(input1) && !digitalRead(input2)){
mySerial.print("01");
lcd.print("IN1:NO , IN2:YES");

}
else if(!digitalRead(input1) && !digitalRead(input2)){
mySerial.print("11");
lcd.print("IN1:YES, IN2:YES");

}
}

void setup() {
Serial.begin(9600);
mySerial.begin(9600);
timer.setInterval(5000, repeatMe);

Serial.println("System Started....");
pinMode(output1, OUTPUT);
pinMode(output2, OUTPUT);
pinMode(output3, OUTPUT);
pinMode(output4, OUTPUT);

pinMode(input1, INPUT_PULLUP);
pinMode(input2, INPUT_PULLUP);

lcd.begin(16, 2);
lcd.setCursor(0, 0);
lcd.print("BLUETOOTH SYSTEM");
}

void loop() {
timer.run();
serialEvent();
}

void serialEvent() {
while (mySerial.available()) {
delay(10);
char c = mySerial.read();
if (c == '#') {
Serial.println(data);
break;
}
data += c; //Shorthand for data = data + c
}
if (data.length() > 0) {
if (data == "10") {
digitalWrite(output1, LOW);
lcd.setCursor(0, 0);lcd.print("1:N,");
} else if (data == "11") {
digitalWrite(output1, HIGH);
lcd.setCursor(0, 0);lcd.print("1:Y,");
} else if (data == "20") {
digitalWrite(output2, LOW);
lcd.setCursor(4, 0);lcd.print("2:N,");
} else if (data == "21") {
digitalWrite(output2, HIGH);
lcd.setCursor(4, 0);lcd.print("2:Y,");
} else if (data == "30") {
digitalWrite(output3, LOW);
lcd.setCursor(8, 0);lcd.print("3:N,");
} else if (data == "31") {
digitalWrite(output3, HIGH);
lcd.setCursor(8, 0);lcd.print("3:Y,");
} else if (data == "40") {
digitalWrite(output4, LOW);
lcd.setCursor(12, 0);lcd.print("4:N.");
} else if (data == "41") {
digitalWrite(output4, HIGH);
lcd.setCursor(12, 0);lcd.print("4:Y.");
}
data = "";
}
}