Ritter® 250 LED Exam Light

The Ritter 250 is the cost-effective solution for providing superior illumination for exams. And with its unique flex arm design, easy on/off switch and LED technology, you won’t have to sacrifice quality or function.

The Ritter 250 takes our proven exam room lighting and makes it even better by incorporating LED technology for longer life, brighter intensity and reduced energy consumption.

Cost-effective

Ritter LED exam lighting is designed to provide a considerable reduction in operating cost over the life of the LED.

Effortless

Easy on/off switch conveniently located on the 4.5" x 4" light head.

Flexible

Both stationary and mobile base options available.

" + "" + "" + //ENG-1082 "\"" + chatbtn_tooltip_text + "\""; /* " "; */ doc.getElementById("widgetlbtn").style.color = color; doc.getElementById("widgetlbtn").style.backgroundColor = msg.widgetcolor; doc.getElementById("widgetlbtn").style.display = 'block'; count = count != undefined ? count : 0; doc.getElementById("spnwidgetlbtn").setAttribute("aria-label", "Chat button , " + count + " unread messages"); //ENG-1082 doc.getElementById("widgetlbtn").addEventListener('click', function () { console.log("switchicon called"); if (parent.IMIChatInit != undefined) { parent.IMIChatInit.chatswitchicon(); } else { IMIChatInit.chatswitchicon(); } }); document.getElementById('imi-chatbutton').style.display = "block"; //console.log( doc.getElementById("widgetlbtn")); /*$('[data-toggle=\"tooltip\"]').tooltip();*/ // doc.close(); /* for test */ var doc1 = document.getElementById('chatunread-frame').contentWindow.document; // doc1.open(); doc1.head.innerHTML = "" + ""; doc1.body.innerHTML = "x
"; // ""+ //"" + //""; //doc1.close(); doc1.getElementsByTagName('html')[0].classList.add('imichatmsgpreview'); doc1.getElementById("ancclearcards").addEventListener('click', function () { if (parent.IMIChatInit != undefined) { parent.IMIChatInit.clearmsgcards(); } else { IMIChatInit.clearmsgcards(); } }); document.getElementById('chatunread-frame').style.display = "block"; IMIGeneral.storeLocal("style_" + document.getElementById("divicw").getAttribute("data-bind") + "_" + window.location.hostname, msg); document.getElementById('chatbutton').style.display = "block"; } else { document.getElementById("divicw").innerHTML = ''; } } catch (e1) { } }, chatswitchicon: function (type) { console.log("Chatswitchicon::" + type); try { /*type=1-max and 0- min */ var isMobile = "0"; // if (window.innerWidth > 768) { // document.getElementById('divchatmain').className = 'main-chat-cont'; // } else { // document.getElementById('divchatmain').className = 'main-chat-cont chatmobile'; // isMobile="1"; // } if ((navigator.userAgent.indexOf("Mobile")) != -1) { isMobile = "1"; } sessionStorage.setItem("data-bind", document.getElementById("divicw").getAttribute("data-bind")); sessionStorage.setItem("data-org", document.getElementById("divicw").getAttribute("data-org")); var iframe = document.getElementById('imi-chatbutton'); if (iframe == null || iframe == undefined) return; var innerDoc = iframe.contentDocument || iframe.contentWindow.document; //Open Widget if (document.getElementById("divchatmain").style.display === 'none' && (type == 1 || type == 2 || type == undefined)) { document.getElementById("divchatmain").style.display = "block"; IMIGeneral.checkmobile(); var widgetmain = document.getElementById("iframechatwindow");//ENG-1034 widgetmain.contentWindow.focus();//ENG-1034 //if ((window.outerWidth < 497) && (document.documentElement.classList.contains('imichatmobile-active') == false) && document.getElementById("divchatmain").style.display == "block") { var className = " " + document.documentElement.className + " "; if ((window.outerWidth < 700) && (" " + className + " ").replace(/[\n\t]/g, " ").indexOf("imichatmobile-active") > -1 && document.getElementById("divchatmain").style.display == "block") { // if((document.documentElement.classList.value.split(/\s+|\./).filter(word => word === 'imichatmobile-active').length==1) == false){ document.documentElement.classList.remove("imichatmobile-active"); document.documentElement.className = document.documentElement.className + " imichatmobile-active"; // } } else { document.documentElement.className = document.documentElement.className.replace(' imichatmobile-active', ''); } document.getElementById('chatunread-frame').style.display = "none"; innerDoc.getElementById("widgetlbtn").setAttribute("class", "open-btn state1 " + buttonType + " close-btn"); // innerDoc.getElementById("widgetlbtn").setAttribute("aria-label", "Close web chat"); innerDoc.getElementById("widgetlbtn").setAttribute("aria-expanded", "true"); document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").style.display = "none"; document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").innerText = ""; localStorage.setItem(fingerprint + "_" + _skey + "_badgecount", 0); localStorage.setItem(fingerprint + "_" + _skey + "_cardcount", 0); IMIChatInit.clearmsgcards(); // if (IMIGeneral.getBrowserName() == "safari") { // if (IMIGeneral.detectIOS()) { // document.body.classList.add('chatnoscroll'); // } // } if (type === undefined) { var destination = document.getElementById('iframechatwindow').contentWindow; msg = { "action": "showiframe", "host": window.location.hostname, "chatmobile": isMobile }; destination.postMessage(msg, domainUrl); document.getElementById("iframechatwindow").setAttribute("aria-hidden", "false"); } return; } //Close Widget if (document.getElementById("divchatmain").style.display === 'block' && (type == 0 || type == 2 || type == undefined)) { document.documentElement.className = document.documentElement.className.replace(' imichatmobile-active', ''); //document.body.classList.remove('chatnoscroll'); document.getElementById("divchatmain").style.display = "none"; innerDoc.getElementById("widgetlbtn").setAttribute("class", "open-btn state " + buttonType); innerDoc.getElementById("widgetlbtn").setAttribute("aria-expanded", "false"); innerDoc.getElementById("widgetlbtn").focus(); document.getElementById('chatunread-frame').style.display = "block"; localStorage.setItem(fingerprint + "_" + _skey + "_cardcount", 0); document.getElementById("iframechatwindow").setAttribute("aria-hidden", "true"); return; } //var iframeEl = document.getElementById("iframechatwindow"); // Make sure you are sending a string, and to stringify JSON // iframeEl.contentWindow.postMessage("hello", '*'); return; } catch (e) { console.log("LaunchProactiveMsgManager:" + e.msg); } }, clearmsgcards: function () { document.getElementById('chatunread-frame').contentWindow.document.getElementById("msg-list").innerHTML = ""; document.getElementById('chatunread-frame').contentWindow.document.getElementById("ancclearcards").style.display = "none"; //document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").style.display = "none"; //document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").innerText == ""; localStorage.setItem(fingerprint + "_" + _skey + "_cardcount", 0); }, openchat: function (event) { document.getElementById('imichat-fullscreen-modal').className = 'imichat-fullscreen-modal'; document.getElementById('imichat-fullscreen-modal').removeAttribute('tabindex'); document.getElementById('imichat-fullscreen-modal').removeAttribute('aria-hidden'); var destination = document.getElementById('iframechatwindow').contentWindow; destination.postMessage({ action: 'openchat', threadid: event.data.threadid, proactive_id: event.data.proactive_id }, '*'); if (parent.IMIChatInit != undefined) { parent.IMIChatInit.chatswitchicon(2); } else { IMIChatInit.chatswitchicon(2); } }, extractContent: function (s) { var span = document.createElement('span'); span.innerHTML = s; return span.textContent || span.innerText; }, badgecount: function (event) { try { if (document.getElementById("divchatmain").style.display === 'none') { var count = document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").innerText; if (count == 0 || count == "") { count = 1; } else { count = parseInt(count) + 1; } var duplicate = 0; var innerDivs; var innerDivsCount = 0; var refChild; IMIChatInit.clearmsgcards(); var containerDiv = document.getElementById('chatunread-frame').contentWindow.document.getElementById("msg-list"); if (count > 1) { innerDivs = containerDiv.getElementsByClassName("msg"); if (innerDivs != undefined) { innerDivsCount = innerDivs.length; for (var i = 0; i < innerDivs.length; i++) { if ("msg_" + event.data.msgtransid == innerDivs[i].id) { duplicate = 1; } } refChild = innerDivs[0]; } } var cardcount; var checkbadgecount; if (innerDivs == undefined) { localStorage.setItem(event.data.fingerprint + "_" + _skey + "_cardcount", 1); } document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").style.display = "block"; if (duplicate == 0) { if (parseInt(innerDivsCount) == 5) { containerDiv.removeChild(document.getElementById('chatunread-frame').contentWindow.document.getElementsByClassName('msg')[4]); containerDiv.removeChild(document.getElementById('chatunread-frame').contentWindow.document.getElementsByClassName('msgclear')[4]); innerDivsCount = innerDivsCount - 1; } if ((parseInt(innerDivsCount) < 1 && event.data.badge_type === undefined) || event.data.badge_type === 2 || event.data.badge_type === 3) { var node = document.createElement("div"); var node1 = document.createElement("div"); var textnode = document.createTextNode(IMIChatInit.extractContent(event.data.msg)); if (textnode.data.length > 45) { if (event.data.badge_type === undefined || event.data.badge_type === 2) { textnode.data = textnode.data.substr(0, 45) + "..."; } else { textnode.data = textnode.data; } } node.className = "msg"; node.style = "cursor:pointer;"; node1.className = "msgclear"; node.id = "msg_" + event.data.msgtransid; // Create a text node node1.id = "msgclear_" + event.data.msgtransid; node1.style = "clear:both;"; node.addEventListener("click", function () { window.parent.postMessage({ action: 'openchat', threadid: event.data.threadid, proactive_id: event.data.proactive_id }, '*'); }); node1.addEventListener("click", function () { window.parent.postMessage({ action: 'openchat', threadid: event.data.threadid, proactive_id: event.data.proactive_id }, '*'); }); if (event.data.msg_from !== undefined && event.data.msg_from !== "") { var span = document.createElement("span"); //var span span.innerHTML = '' + event.data.msg_from + ':'; node.appendChild(span); } else if (event.data.msg_from === undefined || event.data.msg_from == "") { var span = document.createElement("span"); //var span span.innerHTML = 'New Conversation:'; node.appendChild(span); } node.appendChild(textnode); var height = document.getElementsByClassName('main-unreadchat-cont')[0].style.height; if (height == "") { height = 70; } if (innerDivsCount == 0) { height = document.getElementsByClassName('main-unreadchat-cont')[0].style.height = "150px"; } /* else if (innerDivsCount == 2) { height = document.getElementsByClassName('main-unreadchat-cont')[0].style.height = "150px"; } else if (innerDivsCount > 2) {*/ else { document.getElementsByClassName('main-unreadchat-cont')[0].style.height = parseInt(height) + 60 + "px"; } var referenceNode = document.getElementById('chatunread-frame').contentWindow.document.getElementById("msg-list"); // document.querySelector('#some-element'); if (innerDivsCount == 0) { referenceNode.appendChild(node); referenceNode.appendChild(node1); } else { referenceNode.insertBefore(node, refChild); referenceNode.insertBefore(node1, refChild); if ((window.innerHeight + 100) < (document.getElementsByClassName("main-unreadchat-cont")[0].style.height)) { var frame = document.getElementById('chatunread-frame'); var c = frame.contentDocument || frame.contentWindow.document; c.getElementsByTagName("body")[0].offsetHeight = '80%'; c.getElementsByTagName("body")[0].style.overflow = "auto"; } } if (event.data.badge_type === 3) { document.getElementsByClassName("main-unreadchat-cont")[0].style.height = "100%"; var frame = document.getElementById('chatunread-frame'); var c = frame.contentDocument || frame.contentWindow.document; c.getElementsByClassName("msg")[0].style.maxHeight = "unset"; var frameheight = c.getElementsByTagName("body")[0].offsetHeight; document.getElementsByClassName("main-unreadchat-cont")[0].style.height = frameheight + "px"; } } else if (event.data.badge_type === 4) { var fullscreen_modal = document.getElementById('imichat-fullscreen-modal'); fullscreen_modal.className = 'imichat-fullscreen-modal imichat-open'; fullscreen_modal.contentWindow.postMessage({ action: 'bind_data', proactive_id: event.data.proactive_id, threadid: event.data.threadid, msg_from: event.data.msg_from, msg: event.data.msg, btn_chat_now_open: IMILocalisation.getValue(_IMIchat_widget_lang, "proactive_poupup_chat_now_button", "Chat Now"), btn_chat_now_close: IMILocalisation.getValue(_IMIchat_widget_lang, "proactive_poupup_close_button", "Close") }, "*"); } cardcount = parseInt(localStorage.getItem(event.data.fingerprint + "_" + _skey + "_cardcount")) + 1; localStorage.setItem(event.data.fingerprint + "_" + _skey + "_cardcount", cardcount); localStorage.setItem("fingerprint", event.data.fingerprint); localStorage.setItem(event.data.fingerprint + "_" + _skey + "_badgecount", count); document.getElementById('imi-chatbutton').contentWindow.document.getElementById("chattotalbadge").innerText = count; if (count > 0) { //to do for ENG-1082 get localisation for chat button tooltip with count document.getElementById('imi-chatbutton').contentWindow.document.getElementById("spnwidgetlbtn").setAttribute("aria-label", "Chat button , " + count + " unread messages"); //ENG-1082 } else { document.getElementById('imi-chatbutton').contentWindow.document.getElementById("spnwidgetlbtn").setAttribute("aria-label", "Chat button , " + count + " unread messages"); //ENG-1082 } } document.getElementById('chatunread-frame').contentWindow.document.getElementById("ancclearcards").style.display = (event.data.badge_type === undefined || (event.data.badge_type === 2 || event.data.badge_type === 3)) ? "block" : "none"; } } catch (e) { console.log("badgecount:" + e.msg); } }, message: function (event) { try { if (event.data.action != null) { if (event.data.action == 'openchat') { IMIChatInit.openchat(event); } if (event.data.action == 'badgecount') { IMIChatInit.badgecount(event); } if (event.data.action == 'chatswitchicon') { IMIChatInit.chatswitchicon(); //event } if (event.data.action == 'imichat_custom_chat_fields') { if (event.data.type == 'add') { if (_IMIchat_callback_dic['imichat-widget:custom_chat_fields_init'] !== undefined) { _IMIchat_callback_dic['imichat-widget:custom_chat_fields_init'](event.data.response); } } else if (event.data.type == 'update') { if (_IMIchat_callback_dic['imichat-widget:custom_chat_fields_update'] !== undefined) { _IMIchat_callback_dic['imichat-widget:custom_chat_fields_update'](event.data.response); } }//event } if (event.data.action == 'loadstyles') { IMIChatInit.loadJQuery(_domain_name, function () { IMIChatInit.loadwidgetStyles(event.data.message); try { if (event.data.message != null) { if (_IMIchat_callback_dic['imichat-widget:ready'] !== undefined) { _IMIchat_callback_dic['imichat-widget:ready'](_attr_key); console.log("imichat-widget:ready fired"); } //eval('imichatWidgetLoaded();'); if (_IMIchat_callback_dic['imichat-widget:custom_chat_fields_init'] !== undefined) { _IMIchat_callback_dic['imichat-widget:custom_chat_fields_init'](); }// debugger; var widget_data = JSON.parse(event.data.message); hdr_bfp = widget_data.hdr_bfp; hdr_xtoken = widget_data.hdr_xtoken; hdr_tid = widget_data.hdr_tid; } } catch (e) { } IMIChatInit.LaunchProactiveMsgManager(_domain_name, function () { }); IMIChatInit.handleAbandonedChats(); }); } if (event.data.action == 'closemodelpopup') { document.getElementById('imichat-fullscreen-modal').className = 'imichat-fullscreen-modal'; document.getElementById('imichat-fullscreen-modal').setAttribute('tabindex', '-1'); document.getElementById('imichat-fullscreen-modal').setAttribute('aria-hidden', 'true'); } if (event.data.action == 'setsession') { sessionStorage.setItem(event.data.key, event.data.value); } if (event.data.action == 'setlocal') { localStorage.setItem(event.data.key, event.data.value); } if (event.data.action == 'browserstorage') { document.getElementById("divicw").innerHTML = "
\n \n \nError:
Cookies Disabled

We use cookies to enable best chat experience. Follow these directions to re-enable cookies specific to your browser type or re-open this website in a cookie-enabled browser.

"; console.log("Local storage not supported"); } } } catch (e) { } }, resize: function () { try { var destination = document.getElementById('iframechatwindow').contentWindow; destination.postMessage({ action: 'resize', width: window.outerWidth //window.innerWidth//screen.width // document.body.clientWidth }, "*"); IMIGeneral.checkmobile(); } catch (e) { } }, LaunchProactiveMsgManager: function (domainName, callback) { try { var widget_styles = localStorage.getItem("style_" + document.getElementById("divicw").getAttribute("data-bind") + "_" + window.location.hostname); if (widget_styles == null && !JSON.parse(widget_styles).enable_proactive) { callback(); return; } var body = document.getElementsByTagName('body')[0]; var script = document.createElement('script'); script.type = 'text/javascript'; script.src = IMIChatInit.domainName() + '/js/proactive-msg-manager.js'; body.appendChild(script); script.addEventListener('load', function (event) { console.log('proactive manager loaded;'); var destination = document.getElementById('iframechatwindow').contentWindow; destination.postMessage({ action: 'proactive-manager-loaded', attrkey: document.getElementById("divicw").getAttribute("data-bind"), host: window.location.hostname }, "*"); callback(); }); } catch (e) { console.log("LaunchProactiveMsgManager:" + e.msg); } }, processAbandonedChats: function (type) { if (!imichatwidget.hasInitiatedChat()) { return; } var browser_fingerprint = localStorage.getItem("fingerprint"); var url = IMIGeneral.profileUrl() + "livechats/" + _attr_key + "/customers/" + browser_fingerprint + "/abandoned?host=" + window.document.URL; url = url + "&type=" + type; var body = JSON.stringify({ "is_reloaded": false, "is_closechat": true }); var headers = { 'type': 'application/json', 'fpid': hdr_bfp, 'Tid': hdr_tid, 'X-Token': hdr_xtoken }; var blob = new Blob([body], headers); navigator.sendBeacon(url); }, handleAbandonedChats: function () { // Attach the event keypress to exclude the F5 refresh //jQuery(window).on('keydown', function (e) { window.addEventListener('keydown', function (e) { if (e.keyCode == 116) { _IMIchat_IsValidNavigation = true; } }); window.addEventListener("beforeunload", function (e) { sessionStorage.setItem(_attr_key + "_imichat-reload-check", document.referrer); console.log(document.referrer); //sessionStorage.setItem("imi_tabid", Math.random().toString(16).slice(2)); if (_IMIchat_IsValidNavigation !== undefined && !_IMIchat_IsValidNavigation) { IMIChatInit.processAbandonedChats("unload"); } }); if (window.performance.navigation.type == 1) { IMIChatInit.processAbandonedChats("load"); } }, loadJQuery: function (domainName, callback) { if (typeof (jQuery) !== 'undefined') { callback(); return; } var body = document.getElementsByTagName('body')[0]; var script = document.createElement('script'); script.type = 'text/javascript'; script.src = domainName + '/js/jquery.min.js'; body.appendChild(script); script.addEventListener('load', function (event) { callback(); }); return; }, on: function (func_name, callback) { if (typeof callback != 'function') { console.error('function was expected.'); return; } switch (func_name) { case 'imichat-widget:ready': _IMIchat_callback_dic['imichat-widget:ready'] = callback; break; } }, checklocalStorage: function () { var test = 'test'; try { localStorage.setItem(test, test); localStorage.removeItem(test); return true; } catch (e) { return false; } }, call_previous_chats: function () { try { var destination = document.getElementById('iframechatwindow').contentWindow; msg = { "action": "showiframe", "host": window.location.hostname, "chatmobile": ((navigator.userAgent.indexOf("Mobile")) != -1) ? "1" : "0" }; destination.postMessage(msg, domainUrl); } catch (e) { } }, check_clear_session_chats: function () { if (document.referrer == sessionStorage.getItem(_attr_key + "_imichat-reload-check")) { return false; } else if (sessionStorage.getItem(_attr_key + "_imichat-reload-check") == undefined) { return true; } else { console.log("Hey, Thanks for visiting again"); return false; } } }; }(); if (IMIChatInit.checklocalStorage()) { IMIChatInit.init(); } else { document.getElementById("divicw").innerHTML = "
\n \n \nError:
Cookies Disabled

We use cookies to enable best chat experience. Follow these directions to re-enable cookies specific to your browser type or re-open this website in a cookie-enabled browser.

"; console.log("Local storage not supported"); } var imichatwidget = { // get hasInitiatedConversation() { // if (sessionStorage.getItem("imichat_hasinitconvexist") == null) // return false; // if (sessionStorage.getItem("imichat_hasinitconvexist") == "1") { // return true; // } else { // return false; // } // }, hasInitiatedChat: function () { if (sessionStorage.getItem("imichat_hasinitconvexist") == null) return false; if (sessionStorage.getItem("imichat_hasinitconvexist") == "1") { return true; } else { return false; } }, show: function () { //$("#divicw").show();return; document.getElementById("divicw").style.display = 'block'; }, hide: function () { // $("#divicw").hide();return; document.getElementById("divicw").style.display = 'none'; }, /* test:function() { if(sessionStorage.getItem("imichat_hasinitconvexist")==null) return false; if(sessionStorage.getItem("imichat_hasinitconvexist")=="1") { return true; } else { return false; } },*/ maximizeWindow: function () { IMIChatInit.chatswitchicon(1); IMIChatInit.resize(); IMIChatInit.call_previous_chats(); return; }, minimizeWindow: function () { return IMIChatInit.chatswitchicon(0); }, init: function (jsondata, callback) { if (typeof callback != 'function') { console.error('function was expected.'); return; } var destination = document.getElementById('iframechatwindow').contentWindow; destination.postMessage({ action: 'imichat_custom_chat_fields', data: jsondata, type: 'add' }, '*'); _IMIchat_callback_dic['imichat-widget:custom_chat_fields_init'] = callback; }, update: function (jsondata, callback) { if (typeof callback != 'function') { console.error('function was expected.'); return; } var destination = document.getElementById('iframechatwindow').contentWindow; destination.postMessage({ action: 'imichat_custom_chat_fields', data: jsondata, type: 'update' }, '*'); _IMIchat_callback_dic['imichat-widget:custom_chat_fields_update'] = callback; }, on: function (func_name, callback) { if (typeof callback != 'function') { console.error('function was expected.'); return; } switch (func_name) { case 'imichat-widget:ready': _IMIchat_callback_dic['imichat-widget:ready'] = callback; break; } } }; /* function imichatWidgetLoaded(){imi imichatwidget.maximizeWindow(); }*/