<div class="augmenteers-embed-wrapper">
  <iframe id="augmenteersIframe"
          src="https://viewer.augmenteers.com/embedded-model/b5ee0af5ec2cd3a3d19a373d03b19d0a?autostart=true&controls=false&btn_start=false&viewer_api=true"
          frameborder="0" allow="fullscreen" mozallowfullscreen="true" webkitallowfullscreen="true">
  </iframe>
</div>

<script type="text/javascript">
  const iframe = document.getElementById("augmenteersIframe").contentWindow;

  function showAnnotationTriggers() {
    iframe.postMessage({action: "showAnnotationTriggers"}, "*");
  }
</script>
<button onclick="showAnnotationTriggers()">
  Show Annotations
</button>