Poultry temperature regulator 1

#include <SimpleDHT.h>

int pinDHT22 = 2;
SimpleDHT22 dht22(pinDHT22);

# define cooler 3
# define heater 4

int T1;
int T2;
int H1 = 50;
int H2 = 70;

#include <SoftwareSerial.h>
SoftwareSerial B(8,9);

void setup() {
  // put your setup code here, to run once:
 Serial.begin(115200);
 B.begin(9600);
 pinMode(cooler,OUTPUT);
 pinMode(heater,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
    float temperature = 0;
  float humidity = 0;
  int err = SimpleDHTErrSuccess;
  if ((err = dht22.read2(&temperature, &humidity, NULL)) != SimpleDHTErrSuccess) {
    Serial.print("Read DHT22 failed, err="); Serial.print(SimpleDHTErrCode(err));
    Serial.print(","); Serial.println(SimpleDHTErrDuration(err)); delay(2000);
    return;
  }

  Serial.print("Sample OK: ");
  Serial.print((float)temperature); Serial.print(" *C, ");
  Serial.print((float)humidity); Serial.println(" RH%");

    // read the input on analog pin 0:
  int sensorValue = analogRead(A0);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
  int voltage = sensorValue * (5.0 / 1023.0);
  // print out the value you read:
  Serial.println(voltage);

  if (voltage == 0){
  T1 = 32;
  T2 = 35;
  }

  if (voltage == 1){
  T1 = 29;
  T2 = 32;
  }

  if (voltage == 2){
  T1 = 26;
  T2 = 29;
  }

  if (voltage == 3){
  T1 = 23;
  T2 = 26;
  }

  if (voltage == 4){
  T1 = 20;
  T2 = 23;
  }


Serial.print("New temperature range");
Serial.print(T2);
Serial.println(T1);
  B.print((float)temperature);
  B.print(",");
  B.print((float)humidity);
  B.print(",");
  B.print(T2);
  B.print(",");
  B.print(T1);
  B.print(",");
  B.print(voltage);
  B.print(",");
  B.print((millis() / 1000));
  B.print(";");

// TEMPERATURE CONTROL
if ((float)temperature > T2){
//  digitalWrite (cooler,HIGH);
  digitalWrite (heater,LOW);
}

 if ((float)temperature < T1){
  digitalWrite (heater,HIGH);
//  digitalWrite (cooler,LOW);
  }
 if ((float)humidity < H1){
//  digitalWrite (heater,HIGH);
  digitalWrite (cooler,LOW);
  }
   if ((float)humidity < H2){
//  digitalWrite (heater,HIGH);
  digitalWrite (cooler,LOW);
  }

delay(2000);
}