diff --git a/LICENSE b/LICENSE.md
similarity index 99%
rename from LICENSE
rename to LICENSE.md
index 65c5ca8..6600f1c 100644
--- a/LICENSE
+++ b/LICENSE.md
@@ -1,4 +1,4 @@
-                   GNU LESSER GENERAL PUBLIC LICENSE
+GNU LESSER GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..209a1a5
--- /dev/null
+++ b/README.md
@@ -0,0 +1,100 @@
+Pure PHP PJLink Class1 library
+==============================
+
+The PJLink PHP class is the lightest pure PHP package available for
+operating and controlling data projectors using the PJLink Class1 standard.
+
+PJLink Class1 specifications are available here:
+  http://pjlink.jbmia.or.jp/english/data/5-1_PJLink_eng_20131210.pdf
+
+(c) 2017 SysCo systemes de communication sa
+http://developer.sysco.ch/php/
+
+Current build: 1.0.0.1 (2017.04.24)
+
+No external file is needed (no PEAR, no PECL, no cURL).
+
+
+# Licence
+
+  Copyright (c) 2017 SysCo systemes de communication sa
+  SysCo (tm) is a trademark of SysCo systemes de communication sa
+  (http://www.sysco.ch/)
+  All rights reserved.
+
+  PJLink PHP class is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation, either version 3 of the License,
+  or (at your option) any later version.
+
+  PJLink PHP class is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+  GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with PJLink PHP class.
+  If not, see <http://www.gnu.org/licenses/>.
+
+
+# Usage
+
+  Every command send to the projector return false is something is wrong.
+  The error message can be detailed by calling the getError() method.
+
+  Public methods available:
+   setDevice($host, [[[$password], $timeout], $port])
+   powerOn([[[[$host], $password], $timeout], $port])
+   powerOff([[[[$host], $password], $timeout], $port])
+   getPowerState([[[[$host], $password], $timeout], $port])
+   setInput($input, [[[[$host], $password], $timeout], $port])
+   getInput([[[[$host], $password], $timeout], $port])
+   getErrorState([[[[$host], $password], $timeout], $port])
+   getLampState([[[[$host], $password], $timeout], $port])
+   getName([[[[$host], $password], $timeout], $port])
+   getManufactureName([[[[$host], $password], $timeout], $port])
+   getProductName([[[[$host], $password], $timeout], $port])
+   getOtherInfo([[[[$host], $password], $timeout], $port])
+   getClass([[[[$host], $password], $timeout], $port])
+   getError()
+   getErrorNumber()
+   getResponseRaw()
+   getResponseText()
+
+
+# Examples
+
+  // Example 1
+  require_once('pjlink.class.php');
+  $pjlink = new PJLink();
+  if (false === $pjlink->powerOn("192.168.0.1")) {
+    echo $pjlink->getError();
+  } elseif (false === $pjlink->setInput(11, "192.168.0.1")) {
+    echo $pjlink->getError();
+  }
+
+  // Example 2
+  require_once('pjlink.class.php');
+  $pjlink = new PJLink();
+  $pjlink->setDevice("192.168.0.1", "my_pjlink_pass", 10, 4352);
+  if (false === $pjlink->powerOn()) {
+    echo $pjlink->getError();
+  } elseif (false === $pjlink->setInput(11)) {
+    echo $pjlink->getError();
+  }
+  echo "Device: ".$pjlink->getManufactureName().", ".$pjlink->getProductName()."<br />\n";
+
+
+You can support our open source projects with donations and sponsoring.
+Sponsorships are crucial for ongoing and future development!
+If you'd like to support our work, then consider making a donation, any support
+is always welcome even if it's as low as $1!
+You can also sponsor the development of a specific feature. Please contact
+us in order to discuss the detail of the implementation.
+
+**[Donate via PayPal by clicking here][1].** [![Donate via PayPal][2]][1]
+[1]: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=N56M9E2SEAUD4
+[2]: https://www.paypalobjects.com/webstatic/mktg/logo/pp_cc_mark_37x23.jpg
+
+
+And for more PHP classes, have a look on [PHPclasses.org](http://syscoal.users.phpclasses.org/browse/), where a lot of authors are sharing their classes for free.
\ No newline at end of file
diff --git a/example1.php b/example1.php
new file mode 100644
index 0000000..15b8a1f
--- /dev/null
+++ b/example1.php
@@ -0,0 +1,11 @@
+<?php
+  require_once('pjlink.class.php');
+
+  $pjlink = new PJLink();
+
+  if (false === $pjlink->powerOn("192.168.0.1")) {
+    echo $pjlink->getError();
+  } elseif (false === $pjlink->setInput(11, "192.168.0.1")) {
+    echo $pjlink->getError();
+  }
+?>
\ No newline at end of file
diff --git a/example2.php b/example2.php
new file mode 100644
index 0000000..a8bce4c
--- /dev/null
+++ b/example2.php
@@ -0,0 +1,15 @@
+<?php
+  require_once('pjlink.class.php');
+
+  $pjlink = new PJLink();
+
+  $pjlink->setDevice("192.168.0.1", "my_pjlink_pass", 10, 4352);
+
+  if (false === $pjlink->powerOn()) {
+    echo $pjlink->getError();
+  } elseif (false === $pjlink->setInput(11)) {
+    echo $pjlink->getError();
+  }
+
+  echo "Device: ".$pjlink->getManufactureName().", ".$pjlink->getProductName()."<br />\n";
+?>
\ No newline at end of file
diff --git a/pjlink.class.php b/pjlink.class.php
new file mode 100644
index 0000000..caa89dc
--- /dev/null
+++ b/pjlink.class.php
@@ -0,0 +1,740 @@
+<?php
+/**
+ * @file  pjlink.class.php
+ * @brief Pure PHP PJLink Class1 library for operating and controlling data projectors
+ *
+ * @mainpage
+ *
+ * PJLink PHP class - PJLINK Class1 library
+ *
+ * http://developer.sysco.ch/
+ *
+ * The PJLink PHP class is the lightest pure PHP package available for
+ * operating and controlling data projectors using the PJLink Class1 standard.
+ *
+ * PJLink Class1 specifications are available here:
+ *   http://pjlink.jbmia.or.jp/english/data/5-1_PJLink_eng_20131210.pdf
+ *
+ * The Readme file contains additional information.
+ *
+ * PHP 5.3.0 or higher is supported.
+ *
+ * @author    Andre Liechti, SysCo systemes de communication sa, <developer@sysco.ch>
+ * @version   1.0.0.1
+ * @date      2017-04-24
+ * @since     2017-04-23
+ * @copyright (c) 2017 SysCo systemes de communication sa
+ * @copyright GNU Lesser General Public License
+ *
+ *//*
+ *
+ * LICENCE
+ *
+ *   Copyright (c) 2017 SysCo systemes de communication sa
+ *   SysCo (tm) is a trademark of SysCo systemes de communication sa
+ *   (http://www.sysco.ch/)
+ *   All rights reserved.
+ * 
+ *   PJLink PHP class is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU Lesser General Public License as
+ *   published by the Free Software Foundation, either version 3 of the License,
+ *   or (at your option) any later version.
+ * 
+ *   PJLink PHP class is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Lesser General Public License for more details.
+ * 
+ *   You should have received a copy of the GNU Lesser General Public
+ *   License along with PJLink PHP class.
+ *   If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Usage
+ *
+ *   Every command send to the projector return false is something is wrong.
+ *     The error message can be detailed by calling the getError() method.
+ *
+ *   Public methods available:
+ *    setDevice($host, [[[$password], $timeout], $port])
+ *    powerOn([[[[$host], $password], $timeout], $port])
+ *    powerOff([[[[$host], $password], $timeout], $port])
+ *    getPowerState([[[[$host], $password], $timeout], $port])
+ *    setInput($input, [[[[$host], $password], $timeout], $port])
+ *    getInput([[[[$host], $password], $timeout], $port])
+ *    getErrorState([[[[$host], $password], $timeout], $port])
+ *    getLampState([[[[$host], $password], $timeout], $port])
+ *    getName([[[[$host], $password], $timeout], $port])
+ *    getManufactureName([[[[$host], $password], $timeout], $port])
+ *    getProductName([[[[$host], $password], $timeout], $port])
+ *    getOtherInfo([[[[$host], $password], $timeout], $port])
+ *    getClass([[[[$host], $password], $timeout], $port])
+ *    getError()
+ *    getErrorNumber()
+ *    getResponseRaw()
+ *    getResponseText()
+ *
+ *
+ * Examples
+ *
+ *   // Example 1
+ *   require_once('pjlink.class.php');
+ *   $pjlink = new PJLink();
+ *   if (false === $pjlink->powerOn("192.168.0.1")) {
+ *     echo $pjlink->getError();
+ *	 } elseif (false === $pjlink->setInput(11, "192.168.0.1")) {
+ *     echo $pjlink->getError();
+ *	 }
+ *
+ *
+ *   // Example 2
+ *   require_once('pjlink.class.php');
+ *   $pjlink = new PJLink();
+ *   $pjlink->setDevice("192.168.0.1", "my_pjlink_pass", 10, 4352);
+ *   if (false === $pjlink->powerOn()) {
+ *     echo $pjlink->getError();
+ *	 } elseif (false === $pjlink->setInput(11)) {
+ *     echo $pjlink->getError();
+ *	 }
+ *   echo "Device: ".$pjlink->getManufactureName().", ".$pjlink->getProductName()."<br />\n";
+ *
+ *
+ * No external file is needed (no PEAR, no PECL, no cURL).
+ *
+ *
+ * Special issues
+ *
+ *   If you need specific developements concerning strong authentication,
+ *   do not hesistate to contact us per email at developer@sysco.ch.
+ *
+ *
+ * Users feedbacks and comments
+ *
+ * 2017-04-24 SysCo/al (CH)
+ *   First public version
+ *
+ *
+ * Change Log
+ *
+ *   2017-04-24 1.0.0.1 SysCo/al First public version
+ *   2017-04-23 1.0.0.0 SysCo/al Initial implementation
+ *********************************************************************/
+
+// PJLINK constants
+define ("PJLINK_OK",              0);
+define ("PJLINK_BAD_DEVICE",      20);
+define ("PJLINK_NO_CONNECTION",   21);
+define ("PJLINK_AUTH_ERROR",      22);
+define ("PJLINK_SEND_ERROR",      23);
+
+define ("PJLINK_CLASS",           "1");
+define ("PJLINK_DEFAULT_PORT",    4352);
+define ("PJLINK_DEFAULT_TIMEOUT", 5);
+define ("PJLINK_PREFIX",          "%");
+
+class PJLink
+{
+	var $host          = "";
+	var $password      = "";
+	var $timeout       = PJLINK_DEFAULT_TIMEOUT;
+	var $port          = PJLINK_DEFAULT_PORT;
+	var $socket        = NULL;
+	var $error         = "";
+	var $error_number  = "";
+	var $prefix_hash   = "";
+	var $response_raw  = "";
+	var $response_text = "";
+
+	public function getError()
+	{
+		return $this->error;
+	}
+
+	public function getErrorNumber()
+	{
+		return $this->error_number;
+	}
+
+	public function getResponseRaw()
+	{
+		return $this->response_raw;
+	}
+
+	public function getResponseText()
+	{
+		return $this->response_text;
+	}
+
+	public function setDevice(
+		$host,
+		$password = "",
+		$timeout  = PJLINK_DEFAULT_TIMEOUT, 
+		$port     = PJLINK_DEFAULT_PORT
+	) {
+
+		$this->error = "";
+		$this->error_number = PJLINK_OK;
+
+		$this->host     = $host;
+		$this->password = $password;
+		$this->timeout  = $timeout;
+		$this->port     = $port;
+
+		if ($host == '') {
+			$this->error = "Host not defined";
+			$this->error_number = PJLINK_BAD_DEVICE;
+			return false;
+		}
+
+		return true;
+	}
+
+	private function open(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+
+		$this->error = "";
+		$this->error_number = PJLINK_OK;
+
+		if ($host !== "") {
+			$this->host = $host;
+		}
+
+		if ($password !== "") {
+			$this->password = $password;
+		}
+
+		if ($timeout !== 0) {
+			$this->timeout = intval($timeout);
+		}
+
+		if (intval($port) > 0) {
+			$this->port = intval($port);
+		}
+	
+		if ($this->host == '') {
+			$this->error = "Host not defined";
+			$this->error_number = PJLINK_BAD_DEVICE;
+			return false;
+		}
+
+		$errno = 0;
+		$errstr = "";
+
+		$this->socket = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
+
+		if (!$this->socket) {
+			$this->error = "Connection failed: " . socket_strerror($errno);
+			$this->error_number = PJLINK_NO_CONNECTION;
+			return false;
+		}
+
+		stream_set_timeout($this->socket, $this->timeout, 0);
+
+		$response = $this->getResponse();
+
+		if (FALSE !== strpos($response, "PJLINK 0")) {
+			$this->prefix_hash = "";
+			return true;
+		} elseif (FALSE !== strpos($response, "PJLINK 1")) {
+			$auth_random = trim(substr($response, strpos($response, "PJLINK 1") + 9));
+			$this->prefix_hash = md5($auth_random . $password);
+			return true;
+		} else {
+			$this->error = "Bad answer, connection failed";
+			$this->error_number = PJLINK_NO_CONNECTION;
+			return false;
+		}
+	}
+
+
+	private function sendCommand(
+		$command
+	) {
+
+		$this->error = "";
+		$this->error_number = PJLINK_OK;
+		$this->response_raw = "";
+		$this->response_text = "";
+
+		if (!$this->socket) {
+			$this->error = "Device not connected";
+			$this->error_number = PJLINK_NO_CONNECTION;
+			return false;
+		}
+
+		if (FALSE === fwrite($this->socket, $this->prefix_hash . $command . chr(13))) {
+			$this->error = "Error sending command ".$command;
+			$this->error_number = PJLINK_SEND_ERROR;
+			return false;
+		}
+
+		$response = $this->getResponse();
+
+		if (FALSE !== strpos($response, "PJLINK ERRA")) {
+			$this->error = "Authentication failed";
+			$this->error_number = PJLINK_AUTH_ERROR;
+			return false;
+		} elseif (FALSE !== strpos($response, PJLINK_PREFIX)) {
+			$result = trim(substr($response, strpos($response, "=") + 1));
+			if (0 === strpos($result, "ERR")) {
+				$this->response_text = $result;
+				return false;
+			} else {
+				return $result;
+			}
+		} else {
+			$this->error = "Error sending command ".$command;
+			$this->error_number = PJLINK_SEND_ERROR;
+			return false;
+		}
+	}
+
+
+	private function getResponse()
+	{
+
+		$this->error = "";
+		$this->error_number = PJLINK_OK;
+		$this->response_raw = "";
+		$this->response_text = "";
+
+		$response = '';
+		if (!$this->socket) {
+			$this->error = "Device not connected";
+			$this->error_number = PJLINK_NO_CONNECTION;
+			return false;
+		}
+
+		while (true) {
+			$char = fgetc($this->socket);
+			if (($char !== false) && ($char !== chr(13))) {
+				$response.= $char;
+			} else {
+				$this->response_raw = $response;
+				$this->response_text = $response;
+				return $response;
+			}
+		}
+	}
+
+
+	private function close()
+	{
+
+		$this->error = "";
+		$this->error_number = PJLINK_OK;
+
+		if (!$this->socket) {
+			$this->error = "Device not connected";
+			$this->error_number = PJLINK_NO_CONNECTION;
+			return false;
+		} else {
+			fclose($this->socket);
+			return true;
+		}
+	}
+
+	public function powerOn(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "POWR 1";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				switch ($result) {
+				  default:
+						$this->response_text = $result;
+				}
+			} else {
+				switch ($this->response_text) {
+					case 'ERR2':
+						$this->response_text = "out-of-parameter";
+					  break;
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function powerOff(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "POWR 0";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				switch ($result) {
+				  default:
+						$this->response_text = $result;
+				}
+			} else {
+				switch ($this->response_text) {
+					case 'ERR2':
+						$this->response_text = "out-of-parameter";
+					  break;
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getPowerState(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "POWR ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				switch ($result) {
+					case '0':
+						$this->response_text = "off";
+					  break;
+					case '1':
+						$this->response_text = "on";
+					  break;
+					case '2':
+						$this->response_text = "cooling";
+					  break;
+					case '3':
+						$this->response_text = "warm-up";
+					  break;
+				  default:
+						$this->response_text = $result;
+				}
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function setInput(
+		$input,
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "INPT " . $input;
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				switch ($result) {
+				  default:
+						$this->response_text = $result;
+				}
+			} else {
+				switch ($this->response_text) {
+					case 'ERR2':
+						$this->response_text = "nonexistent";
+					  break;
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getInput(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "INPT ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				switch ($result) {
+				  default:
+						$this->response_text = $result;
+				}
+			} else {
+				switch ($this->response_text) {
+					case 'ERR2':
+						$this->response_text = "nonexistent";
+					  break;
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getErrorState(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "ERST ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$this->response_text = "";
+				if (substr($result, 0, 1) != "0") {
+					$this->response_text.= ($this->response_text != "" ? ", " : "") . "FAN: " . ((substr($result, 0, 1) == "1") ? "WARNING" : "ERROR");
+				}
+				if (substr($result, 1, 1) != "0") {
+					$this->response_text.= ($this->response_text != "" ? ", " : "") . "LAMP: " . ((substr($result, 1, 1) == "1") ? "WARNING" : "ERROR");
+				}
+				if (substr($result, 2, 1) != "0") {
+					$this->response_text.= ($this->response_text != "" ? ", " : "") . "TEMPERATURE: " . ((substr($result, 2, 1) == "1") ? "WARNING" : "ERROR");
+				}
+				if (substr($result, 3, 1) != "0") {
+					$this->response_text.= ($this->response_text != "" ? ", " : "") . "COVER OPEN: " . ((substr($result, 3, 1) == "1") ? "WARNING" : "ERROR");
+				}
+				if (substr($result, 4, 1) != "0") {
+					$this->response_text.= ($this->response_text != "" ? ", " : "") . "FILTER: " . ((substr($result, 4, 1) == "1") ? "WARNING" : "ERROR");
+				}
+				if (substr($result, 5, 1) != "0") {
+					$this->response_text.= ($this->response_text != "" ? ", " : "") . "OTHER: " . ((substr($result, 5, 1) == "1") ? "WARNING" : "ERROR");
+				}
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getLampState(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "LAMP ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$lamps = explode(" ", $result);
+				// TODO more details
+				$this->response_text = $result;
+			} else {
+				switch ($this->response_text) {
+					case 'ERR1':
+						$this->response_text = "no-lamp";
+					  break;
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getName(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "NAME ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$this->response_text = $result;
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getManufactureName(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "INF1 ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$this->response_text = $result;
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getProductName(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "INF2 ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$this->response_text = $result;
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getOtherInfo(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "INFO ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$this->response_text = $result;
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+	public function getClass(
+		$host     = "",
+		$password = "",
+		$timeout  = 0,
+		$port     = 0
+	) {
+		$command = PJLINK_PREFIX . PJLINK_CLASS . "CLSS ?";
+		if ($this->open($host, $password, $timeout, $port)) {
+			$result = $this->sendCommand($command);
+			if (false !== $result) {
+				$this->response_text = $result;
+			} else {
+				switch ($this->response_text) {
+					case 'ERR3':
+						$this->response_text = "unavailable";
+					  break;
+					case 'ERR4':
+						$this->response_text = "failure";
+					  break;
+				}
+				$this->error = $this->response_text;
+			}
+			return $result;
+		} else {
+			return false;
+		}
+	}
+
+}
\ No newline at end of file