diff --git a/account.php b/account.php
index b037b63..212a49c 100644
--- a/account.php
+++ b/account.php
@@ -235,13 +235,27 @@ $view .= '<div class="content-block">
     ';
 
 $soldto_id = explode("-",$account_hierarchy->soldto) ?? '';   
+
+//DISPLAY RELATED COMMUNICATION RECORDS
+$view_communication = '';
+if ($_SESSION['permission'] == 3 || $_SESSION['permission'] == 4){
+    $view_communication = ' <a href="index.php?page=communications&partnerid='.$soldto_id[0].'" class="btn">'.$button_partner_assigned_communication.'</a>';
+}
+
+//DISPLAY RELATED USERS
+$view_users ='';
+if ($_SESSION['permission'] == 3 || $_SESSION['permission'] == 4){
+    $view_users = ' <a href="index.php?page=users&partnerid='.$soldto_id[0].'" class="btn">'.$button_partner_assigned_users.'</a>';
+}
+
 $view .= '<div class="content-block">
     <div class="block-header">
         <i class="fa-solid fa-bars fa-sm"></i>'.$view_asset_actions.'
     </div>
     <a href="index.php?page=equipments&partnerid='.$soldto_id[0].'" class="btn">'.$button_partner_assigned_equipment.'</a>
     <a href="index.php?page=contracts&accountID='.$account_hierarchy->soldto.'" class="btn">'.$button_partner_assigned_contracts.'</a>
-
+    '.$view_communication.'
+    '.$view_users.'
 </div>';
 
 //OUTPUT
diff --git a/api/v1/get/communications.php b/api/v1/get/communications.php
index 50cb443..0025932 100644
--- a/api/v1/get/communications.php
+++ b/api/v1/get/communications.php
@@ -48,6 +48,10 @@ if(isset($get_content) && $get_content!=''){
         //build up search
         $clause .= ' AND email like :'.$v[0]; 
         }
+        elseif ($v[0] == 'partnerid') {
+        //check partnerID related records
+        $clause .= ' AND partnerID like :'.$v[0]; 
+        }
         else {//create clause
         $clause .= ' AND '.$v[0].' = :'.$v[0];
         }
@@ -87,6 +91,10 @@ if (!empty($criterias)){
                 $search_value = '%'.$value.'%';
                 $stmt->bindValue($key, $search_value, PDO::PARAM_STR);
             }
+            elseif ($key == 'partnerid'){
+                $search_value = $value.'-%';
+                $stmt->bindValue($key, $search_value, PDO::PARAM_STR);
+            }
             else {
                 $stmt->bindValue($key, $value, PDO::PARAM_STR);
             }
diff --git a/api/v1/get/users.php b/api/v1/get/users.php
index 06c5071..0c35a49 100644
--- a/api/v1/get/users.php
+++ b/api/v1/get/users.php
@@ -51,6 +51,10 @@ if(isset($get_content) && $get_content!=''){
         //build up search
         $clause .= ' AND username like :'.$v[0]; 
         }
+        elseif ($v[0] == 'partnerid') {
+        //check accounthierarchy related users
+        $clause .= ' AND partnerhierarchy like :'.$v[0]; 
+        }
         else {//create clause
         $clause .= ' AND '.$v[0].' = :'.$v[0];
         }
@@ -86,6 +90,10 @@ if (!empty($criterias)){
                 $search_value = '%'.$value.'%';
                 $stmt->bindValue($key, $search_value, PDO::PARAM_STR);
             }
+            elseif ($key == 'partnerid'){
+                $search_value = '%"_"'.$value.'-%';
+                $stmt->bindValue($key, $search_value, PDO::PARAM_STR);
+            }
             else {
                 $stmt->bindValue($key, $value, PDO::PARAM_STR);
             }
diff --git a/assets/readdevice.js b/assets/readdevice.js
index 171daa8..3346194 100644
--- a/assets/readdevice.js
+++ b/assets/readdevice.js
@@ -8,9 +8,9 @@ const VPP1 = []; //for VPP1 values
 const VPP2 = []; //for VPP2 values
 const VBAT = []; //for VBAT values
 const PWM = []; //for PWM values
+const STATE = []; //for STATE values
 const xChart = []; //x-axis chart values
 
-
 function progressBar(percentage, message, color){
     var readbar = document.getElementById("readBar");
     readBar.style.background = color;
@@ -238,14 +238,13 @@ const serialResultsDiv = document.getElementById("serialResults");
 
 async function appendToTerminal(newStuff) {
     serialResultsDiv.innerHTML += newStuff;
-
+    serialOutput +=newStuff
 }
 
 
 
 function renderChart(){
     var test = serialResultsDiv.innerHTML.split(";");
-    console.log(test)
     test.forEach(getData);   
     const xValues = xChart;
         new Chart("chart_VCP", {
@@ -263,6 +262,26 @@ function renderChart(){
                 data: VBAT,
                 borderColor: "black",
                 fill: false
+            },{ 
+                label: "VPP1",
+                data: VPP1,
+                borderColor: "green",
+                fill: false
+            },{ 
+                label: "VPP2",
+                data: VPP2,
+                borderColor: "blue",
+                fill: false
+            },{
+                label: "PWM",
+                data: PWM,
+                backgroundColor: "yellow",
+                fill: false
+            },{
+                label: "STATE",
+                data: STATE,
+                backgroundColor: "purple",
+                fill: false
             }
         ]
         },
@@ -270,75 +289,57 @@ function renderChart(){
             legend: {display: true}
         }
         });
-
-
-        new Chart("chart_VPP", {
-            type: "line",
-            data: {
-                labels: xValues,
-                datasets: [{ 
-                label: "VPP1",
-                data: VPP1,
-                borderColor: "green",
-                fill: false
-                }, { 
-                label: "VPP2",
-                data: VPP2,
-                borderColor: "blue",
-                fill: false
-                },
-            ]
-            },
-            options: {
-                legend: {display: true}
-            }
-            });
-        
-        new Chart("chart_PWM", {
-            type: "bar",
-            data: {
-                labels: xValues,
-                datasets: [{
-                label: "PWM",
-                data: PWM,
-                backgroundColor: "yellow",
-                fill: false
-                }
-            ]
-            },
-            options: {
-                legend: {display: true}
-            }
-            });
-    
 }
 
 //Get the RAW data and turn into object
 function getData(item) {
+    
     let item_array = item.split("=");
     let xaxis = xChart.length + 1;
         
     if (item_array[0] == "VCP"){
-        VCP.push(item_array[1])
+        let vcp = item_array[1] / 1000000;
+        VCP.push(vcp)
         xChart.push(xaxis);
         }
     if (item_array[0] == "VPP1"){
-        VPP1.push(item_array[1])
+        let vpp1 = item_array[1] / 1000000;
+        VPP1.push(vpp1)
         }
     if (item_array[0] == "VPP2"){
-        VPP2.push(item_array[1])
+        let vpp2 = item_array[1] / 1000000;
+        VPP2.push(vpp2)
         }
     if (item_array[0] == "VBAT"){
-        VBAT.push(item_array[1])
+        let vbat = item_array[1] / 1000000;
+        VBAT.push(vbat)
+        }
+    if (item_array[0] == "STATE"){
+        let state
+        switch (item_array[1]) {
+            case 'FULL_CONNECT':
+                state = 5;
+                break;
+            case 'REACTIVATE':
+                state =  3;
+                break;
+            case 'WAIT_CONNECT':
+                state =  -5;
+                break;
+            case 'DISCONNECTED':
+                state =  0;
+                break;
+        }
+        STATE.push(state)
         }
     if (item_array[0] == "PWM")
         {
-            var check_return = item_array[1].match(/[^\r\n]+/g);
-            console.log(check_return, check_return[0])
+            var check_return = item_array[1].match(/[^\r\n]+/g); 
         if (check_return.length == 2){
-            PWM.push(check_return[0])
+            let pwm = check_return[0] / 10;
+            PWM.push(pwm)
+        }
         }
-    }
 }
 
 async function closePort(){
diff --git a/cartest_manage.php b/cartest_manage.php
new file mode 100644
index 0000000..128b6ca
--- /dev/null
+++ b/cartest_manage.php
@@ -0,0 +1,127 @@
+<?php
+defined(page_security_key) or exit;
+
+if (debug && debug_id == $_SESSION['id']){
+    ini_set('display_errors', '1');
+    ini_set('display_startup_errors', '1');
+    error_reporting(E_ALL);  
+}
+
+include_once './assets/functions.php';
+include_once './settings/settings.php';
+
+$page = 'cartest_manage';
+//Check if allowed
+if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
+    header('location: index.php');
+    exit;
+}
+//PAGE Security
+$update_allowed = isAllowed($page ,$_SESSION['profile'],$_SESSION['permission'],'U');
+$delete_allowed = isAllowed($page ,$_SESSION['profile'],$_SESSION['permission'],'D');
+$create_allowed = isAllowed($page ,$_SESSION['profile'],$_SESSION['permission'],'C');
+
+$bearertoken = createCommunicationToken($_SESSION['userkey']);
+
+//GET PRODUCTS FROM DB
+$pdo = dbConnect($dbname);
+$sql = 'SELECT rowID, productcode, productname, product_category,sn from products where status = "1" and build = "1"';
+$stmt = $pdo->prepare($sql);
+//Excute Query
+$stmt->execute();
+//Get results
+$messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+template_header('Buildtool', 'buildtool','view');
+
+$view = '
+<div class="content-title">
+    <div class="title">
+        <i class="fa-solid fa-box-open"></i>
+        <div class="txt">
+            <h2>'.$buildtool_h2 .'</h2>
+            <p>'.$buildtool_p.'</p>
+        </div>
+    </div>
+</div>';
+
+$view .= '
+    <div class="content-header responsive-flex-column pad-top-5">
+        <a href="index.php?page=dashboard" class="btn">'.$button_cancel.'</a>
+     </div>
+';
+
+$view .= '<div class="content-block">
+    <div class="block-header">
+        <i class="fa-solid fa-bars fa-sm"></i><span id="time">25:00</span>
+    </div>
+        <input type="hidden" id="lineToSend" >
+    
+    <div id="connectdevice" style="display:flex;">
+      <div>
+        <button class="btn" style="margin-right:10px;" onclick="connectSerial();startGraph()">Connect</button>
+        <button class="btn" id="clear" onclick="closePort()" style="">X</button>
+        <button class="btn" onClick="window.location.reload()">&#8634;</button>
+      </div>
+      <div id="readStatus" style="width: 75%;background-color: #f1f1f1;">
+        <div id="readBar"></div>
+      </div>
+    </div>
+    <div id="Device_output" style="margin-top: 10px;">
+       <div><canvas id="chart_VCP" style="width:400px;max-width:100%"></canvas></div>
+       <p><small>STATE: -5 = WAIT_CONNECT, 0 = DISCONNECTED, 3 = REACTIVATE, 5 = FULL_CONNECT</small></p> 
+    </div>
+      <div id="serialResults" style="display:none;font-family: monospace;white-space: pre;padding: 10px;background-color:#f1f1f1;"></div>    
+    </div>
+    <div>
+</div>
+</div>
+
+';
+
+
+//OUTPUT
+echo $view;
+
+//ADD JS FILES
+echo '
+<script src = "./assets/readdevice.js?'.script_version.'"></script>
+<script src = "./assets/charts.js?'.script_version.'"></script>
+<script src = "./assets/jquery-2.1.4.min.js"></script>
+<script src = "./assets/DYMO.Label.Framework.latest.js?'.script_version.'" type="text/javascript" charset="UTF-8"> </script>
+<script>
+	var link = "'.$baseurl.'";
+
+    function startGraph(){
+        setInterval(renderChart,5000);
+    }
+
+    function startTimer(duration, display) {
+        var timer = duration, minutes, seconds;
+        setInterval(function () {
+            minutes = parseInt(timer / 60, 10);
+            seconds = parseInt(timer % 60, 10);
+    
+            minutes = minutes < 10 ? "0" + minutes : minutes;
+            seconds = seconds < 10 ? "0" + seconds : seconds;
+    
+            display.textContent = minutes + ":" + seconds;
+    
+            if (--timer < 0) {
+                timer = duration;
+            }
+        }, 1000);
+    }
+    
+    window.onload = function () {
+        var startMinute = 60 * 25,
+            display = document.querySelector(\'#time\');
+        startTimer(startMinute, display);
+    };
+</script>
+';
+
+
+
+template_footer();
+?>
\ No newline at end of file
diff --git a/cartests.php b/cartests.php
index 3116c9b..9acf16a 100644
--- a/cartests.php
+++ b/cartests.php
@@ -76,7 +76,7 @@ $view .= ' <div class="msg success">
 $view .= '
 <div class="content-header responsive-flex-column pad-top-5">';
 if ($create_allowed ===1){
-    $view .= '<a href="index.php?page=cartests" class="btn">'.$button_create_cartest.'</a>';
+    $view .= '<a href="index.php?page=cartest_manage" class="btn">'.$button_create_cartest.'</a>';
 }
 $view .= '    
     <form action="" method="get">
diff --git a/communication.php b/communication.php
index 4169a78..8d8d721 100644
--- a/communication.php
+++ b/communication.php
@@ -1,10 +1,7 @@
 <?php
 defined(page_security_key) or exit;
 
-//SET ORIGIN FOR NAVIGATION
-$_SESSION['prev_origin'] = $_SERVER['REQUEST_URI'];
-$page = $_SESSION['origin'] = 'communication';
-
+$page = 'communication';
 //Check if allowed
 if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
     header('location: index.php');
diff --git a/communications.php b/communications.php
index fece8d9..5b3103d 100644
--- a/communications.php
+++ b/communications.php
@@ -8,11 +8,16 @@ defined(page_security_key) or exit;
 include_once './assets/functions.php';
 include_once './settings/settings.php';
 
-//SET ORIGIN FOR NAVIGATION
-$_SESSION['prev_origin'] = '';
+//SET PAGE ORIGIN FOR NAVIGATION AND SECURITY
+$prev_page = ($_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : (($_SESSION['origin'] == 'account')? $_SESSION['prev_origin'] :'');
+$page = 'communications';
+
+//create backbutton to prev_origin
+$back_btn_orgin =  ($prev_page != '')? '<a href="'.$prev_page.'" class="btn alt mar-right-2">'.$button_back.'</a>':'';
+
 
 //Check if allowed
-if (isAllowed('communications',$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
+if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
     header('location: index.php');
     exit;
 }
@@ -64,6 +69,7 @@ $view = '
             <p>'.$communication_p.'</p>
         </div>
     </div>
+    '.$back_btn_orgin.'
 </div>';
 
 if (isset($success_msg)){
diff --git a/contracts.php b/contracts.php
index 1f4cff2..3330d12 100644
--- a/contracts.php
+++ b/contracts.php
@@ -9,8 +9,16 @@ if (debug && debug_id == $_SESSION['id']){
 include_once './assets/functions.php';
 include_once './settings/settings.php';
 
+
+//SET PAGE ORIGIN FOR NAVIGATION AND SECURITY
+$prev_page = ($_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : (($_SESSION['origin'] == 'account')? $_SESSION['prev_origin'] :'');
+$page = 'contracts';
+
+//create backbutton to prev_origin
+$back_btn_orgin =  ($prev_page != '')? '<a href="'.$prev_page.'" class="btn alt mar-right-2">'.$button_back.'</a>':'';
+
 //Check if allowed
-if (isAllowed('contracts',$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
+if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
     header('location: index.php');
     exit;
 }
@@ -58,6 +66,7 @@ $view = '
             <p>'.$contract_p .'</p>
         </div>
     </div>
+    '.$back_btn_orgin.'
 </div>';
 
 if (isset($success_msg)){
diff --git a/equipment.php b/equipment.php
index 69801fb..2cb65e5 100644
--- a/equipment.php
+++ b/equipment.php
@@ -10,6 +10,8 @@ if (debug && debug_id == $_SESSION['id']){
 include_once './assets/functions.php';
 include_once './settings/settings.php';
 
+//SET ORIGIN FOR NAVIGATION
+$_SESSION['prev_origin_equipment'] = $_SERVER['REQUEST_URI'];
 $page = 'equipment';
 //Check if allowed
 if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
@@ -276,11 +278,31 @@ if ($update_allowed === 1){
     ';
 }
 
+//DISPLAY RELATED COMMUNICATION RECORDS
+$soldto_id = explode("-",$partner_data->soldto) ?? '';  
+$shipto_id = explode("-",$partner_data->shipto) ?? '';
+
+$partner_users_id = ($shipto_id[0] != '')? $shipto_id[0] : (($soldto_id[0] != '')? $soldto_id[0] : 1);
+
+$view_communication = '';
+if ($partner_users_id != 1 && ($_SESSION['permission'] == 3 || $_SESSION['permission'] == 4)){
+    $view_communication = ' <a href="index.php?page=communications&partnerid='.$soldto_id[0].'" class="btn">'.$button_partner_assigned_communication.'</a>';
+}
+
+//DISPLAY RELATED USERS
+$view_users ='';
+if ($partner_users_id != 1 && ($_SESSION['permission'] == 3 || $_SESSION['permission'] == 4)){
+    $view_users = ' <a href="index.php?page=users&partnerid='.$soldto_id[0].'" class="btn">'.$button_partner_assigned_users.'</a>';
+}
+
 $view .= '<div class="content-block">
     <div class="block-header">
         <i class="fa-solid fa-bars fa-sm"></i>'.$view_asset_actions.'
     </div>
-    <a href="index.php?page=history&equipmentID='.$_GET['equipmentID'].'" class="btn">'.$button_history.'</a>';
+    <a href="index.php?page=history&equipmentID='.$_GET['equipmentID'].'" class="btn">'.$button_history.'</a>
+    '.$view_communication.'
+    '.$view_users.'
+    ';
 
 if ($update_allowed === 1){
 
diff --git a/settings/translations/translations_NL.php b/settings/translations/translations_NL.php
index ea39450..1cc875e 100644
--- a/settings/translations/translations_NL.php
+++ b/settings/translations/translations_NL.php
@@ -73,6 +73,8 @@ $button_create_communication = 'Maak communicatie';
 $button_create_account = 'Maak klant';
 $button_partner_assigned_equipment = 'Gerelateerde activa';
 $button_partner_assigned_contracts = 'Gerelateerde contracten';
+$button_partner_assigned_communication = 'Gerelateerde communicatie';
+$button_partner_assigned_users = 'Gerelateerde gebruikers';
 $button_create_contract = 'Maak contract';
 $button_create_communication_send = 'Firmware communicatie';
 $button_create_cartest = 'Maak autotest';
diff --git a/settings/translations/translations_US.php b/settings/translations/translations_US.php
index 588165a..b496405 100644
--- a/settings/translations/translations_US.php
+++ b/settings/translations/translations_US.php
@@ -73,6 +73,8 @@ $button_create_communication = 'Create communication';
 $button_create_account = 'Create account';
 $button_partner_assigned_equipment = 'Related assets';
 $button_partner_assigned_contracts = 'Related contracts';
+$button_partner_assigned_communication = 'Related communication';
+$button_partner_assigned_users = 'Related users';
 $button_create_contract = 'Create contract';
 $button_create_communication_send = 'Firmware communication';
 $button_create_cartest = 'Create cartest';
diff --git a/user.php b/user.php
index 33e22a3..cda01ba 100644
--- a/user.php
+++ b/user.php
@@ -175,7 +175,7 @@ $view .= '<div class="content-block tab-content active">
                     <option value="0" '.(($user['userkey']==0 || $user['userkey'] =='' )?' selected':'').'>'.$disabled .'</option>
                 </select>
                 <label for="username">'.$User_username.'</label>
-                <input id="name" type="text" name="username" placeholder="'.$User_username.'" value="'.$user['username'].'" required">
+                <input id="name" type="text" name="username" placeholder="'.$User_username.'" value="'.$user['username'].'" pattern="^\S+$" required">
                 <label for="username">'.$User_email.'</label>
                 <input id="name" type="email" name="email" placeholder="'.$User_email.'" value="'.$user['email'].'" required">
                 <label for="view">'.$User_permission.'</label>
diff --git a/users.php b/users.php
index e191556..b3a2595 100644
--- a/users.php
+++ b/users.php
@@ -8,7 +8,13 @@ defined(page_security_key) or exit;
 include_once './assets/functions.php';
 include_once './settings/settings.php';
 
+//SET PAGE ORIGIN FOR NAVIGATION AND SECURITY
+$prev_page = ($_SESSION['origin'] == 'equipments') ? $_SESSION['prev_origin_equipment'] : (($_SESSION['origin'] == 'account')?$_SESSION['prev_origin'] :'');
 $page = 'users';
+
+//create backbutton to prev_origin
+$back_btn_orgin =  ($prev_page != '')? '<a href="'.$prev_page.'" class="btn alt mar-right-2">'.$button_back.'</a>':'';
+
 //Check if allowed
 if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
     header('location: index.php');
@@ -64,6 +70,7 @@ $view = '
             <p>'.$users_p.'</p>
         </div>
     </div>
+    '.$back_btn_orgin.'
 </div>';
 
 if (isset($success_msg)){