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Digital Wireless Portable Tour Guide System (DL-8T Transmitter / DL-8R Receiver) WAVE Pro

Advanced digital transmission system delivers clear, high-quality audio with reduced environmental interference.
Lightweight design, with the host unit weighing approximately 55 grams including battery.
Ideal for guided tours in various settings such as exhibition venues, museums, schools, and factories.
Built-in rechargeable battery provides up to 30 hours of use (receiver) or 18 hours (transmitter) on a full charge.
Charging time of approximately 3–4 hours.
Utilizes digital wireless channels with an effective range of up to 50 meters.
Automatic frequency pairing function for easy selection of available nearby channels.
Equipped with a USB-C charging port, compatible with standard USB power adapters (sold separately), with an optional 24-slot charger (WAVE CHG-24) available for purchase.

Category

Okayo Wireless translation / tour guide system

Overview

Overview

Advanced digital transmission system delivers clear, high-quality audio with reduced environmental interference.
Lightweight design, with the host unit weighing approximately 55 grams including battery.
Ideal for guided tours in various settings such as exhibition venues, museums, schools, and factories.
Built-in rechargeable battery provides up to 30 hours of use (receiver) or 18 hours (transmitter) on a full charge.
Charging time of approximately 3–4 hours.
Utilizes digital wireless channels with an effective range of up to 50 meters.
Automatic frequency pairing function for easy selection of available nearby channels.
Equipped with a USB-C charging port, compatible with standard USB power adapters (sold separately), with an optional 24-slot charger (WAVE CHG-24) available for purchase.

Functions

Services and Support

Support Hotline: +852 2313 0666 Enquiry form

Downloads DL 8TR WAVE PRO

Contact Us

9/F Peninsula Centre, 67 Mody Road, Tsimshtsui East, Kln., Hong Kong

+852 2313 0666

+852 2313 0656

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© 2026 Shun Hing Technology Co., Ltd.

.global-search-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgb(238 238 238 / 0.01); display: flex; justify-content: center; align-items: flex-start; z-index: 9999; opacity: 0; transition: background 0.16s ease, opacity 0.22s ease; } .global-search-overlay-on { opacity: 1 !important; background: rgb(238 238 238 / 0.75); transition: background 0.16s ease, opacity 0.22s ease; } .overlay-content { margin-top: 6rem; background: white; border-radius: 8px; max-width: 900px; width: 90%; text-align: center; margin-bottom: 5rem; } /* Button styles */ #trigger-btn { padding: 12px 24px; background: #42b883; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; } #trigger-btn:hover { background: #359a6a; } /* Close button */ .close-btn { position: absolute; top: 1rem; right: 1rem; background: none; border: none; color: white; font-size: 1.5rem; cursor: pointer; } import { ref, watch, computed, onMounted, onBeforeUnmount, onUnmounted, nextTick } from 'vue'; import { useFetch, useWindowSize, onKeyStroke, useFocusWithin } from '@vueuse/core'; // const { useFetch } = VueUse; export default { components: { }, props: { 'skipSearchIfNoKeyWord': { type: Boolean, default: true }, 'searchPageUrl': { type: String, default: '' } }, directives: { }, setup({ skipSearchIfNoKeyWord, searchPageUrl }) { const isOverlayVisible = ref(false); const isOverlayVisibleDeferred = ref(false); const globalsearchoverlayDOM = ref(null); const globalsearchboxdomref = ref(null); const globalsearchitemsdomref = ref(null); const globalsearchcatsdomref = ref(null); const globalsearchsuggdomref = ref(null); const uicontrol = ref({ q: '' }); let firstFocusableElement; let lastFocusableElement; const focusWithinModalF = function (e) { //console.log('aaa'); if (!lastFocusableElement || !lastFocusableElement) { return false; } //console.log('bbb'); if (e.key === 'Tab') { if (e.shiftKey) { // Shift + Tab if (document.activeElement === firstFocusableElement) { lastFocusableElement.focus(); e.preventDefault(); } } else { // Tab if (document.activeElement === lastFocusableElement) { firstFocusableElement.focus(); e.preventDefault(); } } } else if (e.key === 'Escape') { e.preventDefault(); closeGlobalSearchOverlayF(); } }; const refreshFocusTrapF = () => { // globalsearchoverlayDOM.value const focusableElements = globalsearchoverlayDOM.value.querySelectorAll( 'a[href]:not([tabindex="-1"]), button, textarea, input, select, [tabindex]:not([tabindex="-1"])' ); firstFocusableElement = focusableElements[0]; lastFocusableElement = focusableElements[focusableElements.length - 1]; }; const focusPreviousDomElementF = () => { const focusableElements = Array.from(globalsearchoverlayDOM.value.querySelectorAll( 'a[href]:not([tabindex="-1"]), button, textarea, input, select, [tabindex]:not([tabindex="-1"])' )); const currentFocusedElement = document.activeElement; const currentIndex = focusableElements.indexOf(currentFocusedElement); if (currentIndex > 0 && currentIndex < focusableElements.length) { focusableElements[currentIndex - 1].focus(); } else if (currentIndex === 0) { // Optionally, focus the first element if at the end focusableElements[focusableElements.length - 1].focus(); } }; const focusNextDomElementF = () => { const focusableElements = Array.from(globalsearchoverlayDOM.value.querySelectorAll( 'a[href]:not([tabindex="-1"]), button, textarea, input, select, [tabindex]:not([tabindex="-1"])' )); const currentFocusedElement = document.activeElement; const currentIndex = focusableElements.indexOf(currentFocusedElement); if (currentIndex !== -1 && currentIndex < focusableElements.length - 1) { focusableElements[currentIndex + 1].focus(); } else if (currentIndex === focusableElements.length - 1) { // Optionally, focus the first element if at the end focusableElements[0].focus(); } }; const searchOverlayTriggerOpenF = async () => { //console.log('searchOverlayTriggerOpenF event received'); window.document.body.classList.toggle('overflow-hidden', true); isOverlayVisible.value = true; await nextTick(); setTimeout(function () { if (globalsearchboxdomref.value) { refreshFocusTrapF(); globalsearchboxdomref.value.focus(); } isOverlayVisibleDeferred.value = true; }, 100); if (globalsearchoverlayDOM.value) { globalsearchoverlayDOM.value.setAttribute('tabindex', '0'); refreshFocusTrapF(); firstFocusableElement.focus(); /// Attach: tab-trapping globalsearchoverlayDOM.value.addEventListener('keydown', focusWithinModalF); } }; const closeGlobalSearchOverlayF = () => { globalsearchoverlayDOM.value?.setAttribute('tabindex', '-1'); /// Detach: tab-trapping globalsearchoverlayDOM.value?.removeEventListener('keydown', focusWithinModalF); window.document.body.classList.toggle('overflow-hidden', false); isOverlayVisible.value = isOverlayVisibleDeferred.value = false; }; onMounted(() => { /// Attach: receive regular JS event from outside of Vue window.addEventListener('search-overlay-trigger-open', searchOverlayTriggerOpenF); }); onBeforeUnmount(() => { /// Detach: receive regular JS event from outside of Vue window.removeEventListener('search-overlay-trigger-open', searchOverlayTriggerOpenF); }); const lastAbortH = ref(null); const scopeTotal = ref(0); const isInitializing = ref(true); const isLoading = ref(false); const facetCountDir = ref(null); const quicksearchitems = ref(null); const suggestions = ref(null); const queryoflastresult = ref(''); const facetCountDir_top4 = computed(() => { return _.chain(facetCountDir.value).first(4).value(); }); const facetCountDir_excepttop4 = computed(() => { return _.chain(facetCountDir.value).rest(4).value(); }); const refreshSearchResultF = async (routeQuery) => { var nv = routeQuery; if (skipSearchIfNoKeyWord && (nv.q === undefined || nv.q.trim() === '')) { //pdts.value = []; scopeTotal.value = 0; //firstRankInView.value = 0; //lastRankInView.value = 0; //currentPageNo.value = 0; //totalPageCount.value = 0; //selectedPageNo.value = 1; //hasSearchCriteria.value = false; isInitializing.value = false; isLoading.value = false; return; } if (lastAbortH.value) { if (lastAbortH.value.canAbort && lastAbortH.value.canAbort.value) { lastAbortH.value.abort(); } } const keywordsSplit = (nv.q || '').replace(/\s+$/, '').split(' '); const lastKeywordsSplit = (keywordsSplit.length > 1) ? keywordsSplit[keywordsSplit.length - 1] : '*'; const reqUrl = ref('/en/api/v1/site/IndexJson')// const reqData = ref({ q: nv.q || '', tids: nv.t ? [].concat(nv.t) : [], si: parseInt(nv.si || 0, 10), c: parseInt(nv.c || 10, 10), src: 'kb', }); const reqUrlCombined = ref(reqUrl.value);// + '?' + new URLSearchParams(reqData.value)) try { isLoading.value = true; const { isFetching, error, data, abort, canAbort } = await useFetch(reqUrlCombined, { method: 'POST', headers: { 'Accept': 'application/json', 'Content-Type': 'application/json' }, body: JSON.stringify(reqData.value) }, { refetch: true, timeout: 60000 }).json(); lastAbortH.value = { abort: abort, canAbort: canAbort }; if (error?.value) { hasConnectivityError.value = true; setTimeout(function () { hasConnectivityError.value = false }, 5000); return; } if (data && data.value && data.value.success && data.value.payload && data.value.payload.items) { //pdts.value = [].concat(data.value.payload.pdts); quicksearchitems.value = _.chain([].concat(data.value.payload.items)).first(5).value(); scopeTotal.value = data.value.payload.scopetotal; //firstRankInView.value = parseInt(reqData.value.si, 10) + 1; //lastRankInView.value = ((parseInt(reqData.value.si, 10) + parseInt(reqData.value.c, 10)) >= scopeTotal.value) ? scopeTotal.value : (parseInt(reqData.value.si, 10) + parseInt(reqData.value.c, 10)); //currentPageNo.value = Math.floor(parseInt(reqData.value.si, 10) / parseInt(reqData.value.c, 10)) + 1 //totalPageCount.value = Math.ceil(scopeTotal.value / parseInt(reqData.value.c, 10)); //selectedPageNo.value = currentPageNo.value; //hasSearchCriteria.value = reqData.value.q?.length > 0 || reqData.value.tids?.length > 0; queryoflastresult.value = nv.q; } if (data && data.value && data.value.success && data.value.payload && data.value.payload.facets && data.value.payload.facets.length > 0) { // 0: {dimension: "cati", u: 'URL, l: 'LABEL', c: 'COUNT', dataumbid: 'DATAUMBID' } facetCountDir.value = _.chain(data.value.payload.facets) .filter(function (itm) { return itm.dim === 'cati' }) .map(function (itm) { return { catid: parseInt(itm.dataumbid, 10), label: itm.l, url: itm.u, scopecount: parseInt(itm.c, 10) }; }) //.first(5) .value(); } else { facetCountDir.value = []; } if (data && data.value && data.value.success && data.value.payload && data.value.payload.su) { suggestions.value = [].concat(_.map(data.value.payload.su, function (x) { return x.text; })); } //console.log('facetCountDir.value=', facetCountDir.value); } finally { isInitializing.value = false; isLoading.value = false; isMoreFacetsVisible.value = false; await nextTick(); refreshFocusTrapF(); } }; const refreshSearchResultFdebounced = _.debounce(function (nv) { return refreshSearchResultF(nv); }, 380); watch(uicontrol, (nv, ov) => { //debouncedRouteChangeF(nv); refreshSearchResultFdebounced(nv); //lastuicontrolvalue = JSON.parse(JSON.stringify(nv)); }, { immediate: true, deep: true }); const isMoreFacetsVisible = ref(false); const expandMoreFacetsF = (e) => { isMoreFacetsVisible.value = !isMoreFacetsVisible.value; focusPreviousDomElementF(); setTimeout(function () { focusNextDomElementF(); }, 20); }; const isShowMoreSearchResultsButton = computed(() => { return scopeTotal.value > 10; }); const formattedSuggestions = computed(() => { if (suggestions.value && suggestions.value.length) { const qTrimmed = uicontrol.value.q?.replace(/\s+$/, ''); const qLastKeyword = _.chain(qTrimmed?.split(/[ ]/)).last().value(); // const __result = _.chain(suggestions.value).first(6).map(function (x) { const __r = (scopeTotal.value > 0) ? ((qTrimmed !== '') ? (qLastKeyword !== '' && qTrimmed.toLowerCase().indexOf(qLastKeyword.toLowerCase()) > -1 && x.toLowerCase().indexOf(qLastKeyword.toLowerCase()) > -1) ? qTrimmed.substr(0, qTrimmed.toLowerCase().lastIndexOf(qLastKeyword.toLowerCase())) // fusepended : (qTrimmed + ' ') // appended : '' ) : ''; return { literal: __r + x, pre: __r, suggn: x }; }).value(); return __result; } return []; }); // When clicked on any suggestion, immediately empty the suggestion candidates so the suggestion panel disappears OR const formattedSuggestionClickedF = function (w00t) { //console.log('formattedSuggestionClickedF', w00t); if (w00t) { //suggestions.value = []; if (globalsearchboxdomref.value) { globalsearchboxdomref.value.focus(); } uicontrol.value.q = w00t; } }; //@change="searchboxHandleInputF" const searchboxHandleInputF = () => { }; const searchboxHandleEscKeyUpF = (evt) => { }; const searchboxHandleDownKeyUpF = () => { if (facetCountDir.value && facetCountDir.value.length || quicksearchitems.value && quicksearchitems.value.length || suggestions.value && suggestions.value.length) { focusNextDomElementF(); } }; const catsLiHandleUpKeyDownF = (e) => { focusPreviousDomElementF(); }; const catsLiHandleDownKeyDownF = (e) => { focusNextDomElementF(); }; const catsLiHandleLeftKeyDownF = (e) => { focusPreviousDomElementF(); }; const catsLiHandleRightKeyDownF = (e) => { focusNextDomElementF(); }; const catsLiHandleEnterKeyPressF = (e) => { const aEle = e.target?.querySelector('a'); if (aEle) { aEle.click(); e.preventDefault(); } }; const quicksearchLiHandleUpKeyDownF = (e) => { focusPreviousDomElementF(); }; const quicksearchLiHandleDownKeyDownF = (e) => { //COMMENT: do not cycle to cross btn //focusNextDomElementF(); if (e.target.nextElementSibling) { e.target.nextElementSibling.focus(); } }; const quicksearchLiHandleLeftKeyDownF = (e) => { if (globalsearchboxdomref.value) { const _gsbdilen = globalsearchboxdomref.value.value.length; globalsearchboxdomref.value.setSelectionRange(0, _gsbdilen); globalsearchboxdomref.value.focus(); } }; const quicksearchMoreResultsLiHandleEnterKeyPressF = (e) => { if (searchPageUrl) { top.location = searchPageUrl + '?q=' + uicontrol.value.q; e.preventDefault(); } }; //@keyup.up="suggestionLiHandleUpKeyDownF" const suggestionLiHandleUpKeyDownF = (e) => { if (e.target.previousElementSibling) { e.target.previousElementSibling.focus(); } else if (globalsearchboxdomref.value) { globalsearchboxdomref.value.focus(); } }; //@keyup.down="suggestionLiHandleDownKeyDownF" const suggestionLiHandleDownKeyDownF = (e) => { if (e.target.nextElementSibling) { e.target.nextElementSibling.focus(); } }; //@keyup.left="suggestionLiHandleLeftKeyDownF" const suggestionLiHandleLeftKeyDownF = (e) => { globalsearchboxdomref.value?.focus(); }; //@keyup.backspace="suggestionLiHandleBackspaceKeyDownF" const suggestionLiHandleBackspaceKeyDownF = (e) => { //debouncedSuggestionPanelOpenCloseF(false); globalsearchboxdomref.value?.focus(); }; const closeSuggestionClickedF = () => { //suggestionPanelCloseLock.value = true; //debouncedSuggestionPanelOpenCloseF(false); globalsearchboxdomref.value?.focus(); }; const toggleSuggestionClickedF = () => { globalsearchboxdomref.value?.focus(); }; const quicksearchLiHandleEnterKeyPressF = (e) => { const aEle = e.target?.querySelector('a'); if (aEle) { aEle.click(); e.preventDefault(); } }; return { isInitializing, isLoading, //showOverlayF, //closeOverlayF, globalsearchoverlayDOM, globalsearchboxdomref, globalsearchitemsdomref, globalsearchcatsdomref, globalsearchsuggdomref, queryoflastresult, uicontrol, scopeTotal, facetCountDir, facetCountDir_top4, facetCountDir_excepttop4, isMoreFacetsVisible, searchboxHandleInputF, searchboxHandleEscKeyUpF, searchboxHandleDownKeyUpF, suggestionLiHandleUpKeyDownF, suggestionLiHandleDownKeyDownF, suggestionLiHandleLeftKeyDownF, suggestionLiHandleBackspaceKeyDownF, catsLiHandleUpKeyDownF, catsLiHandleDownKeyDownF, catsLiHandleLeftKeyDownF, catsLiHandleRightKeyDownF, catsLiHandleEnterKeyPressF, quicksearchLiHandleUpKeyDownF, quicksearchLiHandleDownKeyDownF, quicksearchLiHandleLeftKeyDownF, quicksearchLiHandleEnterKeyPressF, quicksearchMoreResultsLiHandleEnterKeyPressF, expandMoreFacetsF, toggleSuggestionClickedF, isOverlayVisible, isOverlayVisibleDeferred, closeGlobalSearchOverlayF, quicksearchitems, formattedSuggestions, formattedSuggestionClickedF, isShowMoreSearchResultsButton, }; } }