Pagina Html non visualizza valore sensori

#include <SPI.h>
#include <Ethernet2.h>
#include <RCSwitch.h>
#include "DHT.h"
#include <stdio.h>
#define DHTTYPE DHT22
#define DHTPIN 5
RCSwitch mySwitch = RCSwitch();
DHT dht(DHTPIN, DHTTYPE);
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
IPAddress ip(192, 168, 1, 106);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);
EthernetServer server(80);
//Sensori
const int value = mySwitch.getReceivedValue();
int inByte;
char Data[8];
int s;
unsigned long Tempo;
String readString; //stringhe
boolean ledon1 = false;
boolean ledon2 = false;
boolean ledon3 = false;
boolean ledon4 = false;
boolean ledon5 = false;
void setup() {
  Serial.begin(9600);
  Serial1.begin(9600);
  dht.begin();
  Ethernet.begin(mac, ip);
  mySwitch.enableTransmit(31);
  mySwitch.enableReceive(0);
}
void loop() {
  do {
    if (Serial1.available()) {
      Data[s]  = Serial1.read();
      s++;
    }
    if (s < 1)Tempo = millis();
  } while (s < 5 && (millis() - Tempo) < 0); 
  Data[s] = 0;
  inByte = atoi(Data);
  s = 0;
  Serial.println( inByte);
/*inizio client*/
EthernetClient  client = server.available();
if (client) {
  boolean currentLineIsBlank = true;
  while (client.connected()) {
    if (client.available()) {
      char c = client.read();
      readString.concat(c);
      if (c == '\n' && currentLineIsBlank) {
        if (readString.indexOf("L=2") > 0) {    //rele ON
          mySwitch.send("000100000000010101010001");
          ledon1 = true;
          //accende il led con comando a 433 Mhz
        }
        if (readString.indexOf("L=3") > 0) {   //rele1 OFF
          mySwitch.send("000100000000010101010100");
          ledon1 = false;
          //spenge il led
        }
        if (readString.indexOf("L=4") > 0) {   //rele2 ON
          mySwitch.send("000100000001000101010001");
          ledon2 = true;
        }
        if (readString.indexOf("L=5") > 0) {   //rele2 OFF
          mySwitch.send("000100000001000101010100");
          ledon2 = false;
        }
        if (readString.indexOf("L=6") > 0) {   //rele3 ON
          mySwitch.send("000100000001010001010001");
          ledon3 = true;
        }
        if (readString.indexOf("L=7") > 0) {   //rele3 OFF
          mySwitch.send("000100000001010001010100");
          ledon3 = false;
        }
        if (readString.indexOf("L=8") > 0) {   //rele4 ON
          mySwitch.send("000100000001010100010001");
          ledon4 = true;
        }
        if (readString.indexOf("L=9") > 0) {   //rele4 OFF
          mySwitch.send("000100000001010100010100");
          ledon4 = false;
        }
        if (readString.indexOf("L=10") > 0) {  //rele5 ON
          mySwitch.send("010000000000010101010001");
          ledon5 = true;
        }
        if (readString.indexOf("L=11") > 0) {  //rele5 OFF
          mySwitch.send("010000000000010101010100");
          ledon5 = false;
        }
        if (readString.indexOf("L=13") > 0) {  //rele tutti OFF
          mySwitch.send("000100000000010101010100");

          mySwitch.send("000100000001000101010100");

          mySwitch.send("000100000001010001010100");

          mySwitch.send("000100000001010100010100");

          mySwitch.send("010000000000010101010100");
          ledon1 = false;
          ledon2 = false;
          ledon3 = false;
          ledon4 = false;
          ledon5 = false;
        }
        // COSTRUZIONE PAGINA HTML
        client.println("HTTP/1.1 200 OK");
        client.println("Content-Type: text/html");
        client.println();
        client.println("<html>");
        client.print("<head>");
        client.print(" <title>Gergio Server Domotica</title> ");
        client.println(" <meta name='viewport' content='width=device-width, user-scrollbar=no'>");
        client.print("</head>");
        client.println(" <body>");
        client.println("<p>Temperatura Ambientale ");
        client.print(dht.readTemperature());       //Sensori Arduino Master da visualizzare via Html
        client.println(" C</p>");
        client.println("<p>Umidita Ambientale ");
        client.print(dht.readHumidity());
        client.println(" %</p>");
        client.println("<p>Sensori Slave remoto ");   //Sensori Arduino Slave remoto da visualizzare via Html
        client.write(inByte);
        client.println(" %</p>");
        //Inizio pagina Menù luci
        client.println("<h3>Luce Biblioteca</h3>");
        client.println("<a href='/?L=2'>Accendi</a> | <a href='/?L=3'>Spegni</a></h2>"); //primo rele
        if (ledon1)  {
          client.println("<span style='color:green; font-weight:bold;'>ON</span></font>");
        }
        else
        {
          client.println("<span style='color:red; font-weight:bold;'>OFF</span></font>");
        }
        client.println("<hr >");

        client.println("<h3>Luce mensole</h3>");
        client.println("<a href='/?L=4'>Accendi</a> | <a href='/?L=5'>Spegni</a>");//secondo rele
        if (ledon2) {
          client.println("<span style='color:green; font-weight:bold;'>ON</span></font>");
        }
        else
        {
          client.println("<span style='color:red; font-weight:bold;'>OFF</span></font>");
        }
        client.println("<hr >");
        client.println("<h3>Luce colonna</h2>");
        client.println("<a href='/?L=6'>Accendi</a> | <a href='/?L=7'>Spegni</a>"); //terzo rele
        if (ledon3) {
          client.println("<span style='color:green; font-weight:bold;'>ON</span></font>");
        }
        else
        {
          client.println("<span style='color:red; font-weight:bold;'>OFF</span></font>");
        }
        client.println("<hr >");
        client.println("<h3>Led Scrivania</h3>");
        client.println("<a href='/?L=8'>Accendi</a> | <a href='/?L=9'>Spegni</a></h2>"); //quarto rele
        if (ledon4)
        {
          client.println("<span style='color:green; font-weight:bold;'>ON</span></font>");
        }
        else
        {
          client.println("<span style='color:red; font-weight:bold;'>OFF</span></font>");
        }
        client.println("<hr >");
        client.println("<h3>Audio diffusori</h3>");
        client.println("<a href='/?L=10'>Accendi</a> | <a href='/?L=11'>Spegni</a></h2>");//quinto rele
        if (ledon5)
        {
          client.println("<span style='color:green; font-weight:bold;'>ON</span></font>");
        }
        else
        {
          client.println("<span style='color:red; font-weight:bold;'>OFF</span></font>");
        }
        client.println("<hr >");
        client.println("<h3>All Off<h3><a href='/?L=13'>Spegni Tutto</a> ");
        client.println(" </body>");
        client.println("</html>");
        readString = "";
        client.print("<meta http-equiv=\"refresh\" content=\"3\">");
        client.stop();
      }
    }
  }
}
}

Ho modificato il programma in questo modo ma non riesco comunque a visualizzare il valore per intero ossia 23.7 C 70% ma solo un byte per volta.
Non riesco a concatenare i singoli Byte che ricevo.
Forse dovrei laasciar perdere.