Node-RED block in Snap4City Microservice library node-red-contrib-snap4city-developer is "notificator-history-events">
    <p>It allows to request the events that have been detected by the notifier in the chosen period.</p>

    <h3>Inputs</h3>
    A JSON with these parameters:

    <dl class="message-properties">
        <dt>dashboard
            <span class="property-type">string</span>
        </dt>
        <dd>The name of the dashboard where the event being notified was created</dd>
        <dt>Widget
            <span class="property-type">string</span>
        </dt>
        <dd>The name of the widget where the event being notified was created</dd>
        <dt>Event
            <span class="property-type">string</span>
        </dt>
        <dd>The name of the event to be observed with this node</dd>
        <dt>Start Date
            <span class="property-type">date</span>
        </dt>
        <dd>Start date of the event search period</dd>
        <dt>End Date
            <span class="property-type">date</span>
        </dt>
        <dd>End date of the event search period</dd>
    </dl>

    <h3>Outputs</h3>
    <dl class="message-properties">
        <dd> Returns an array containing the events that have been detected by the notifier in the search period</dd>
    </dl>

    <h3>Details</h3>
    <p>The node can receive a JSON with the parameters described in the Inputs section and with them generate the output JSON.
        If the values are not present in the input JSON, these are read by those in the configuration. If they are not present
        in either part, an error is generated for the necessary parameters.</p>