Toggle checkbox 

The checkbox with the renderType checkboxToggle renders as one or several toggle switches. As opposed to the Labeled toggle checkbox no additional labels for the states can be defined.

A toggle

A toggle

Its state can be inverted via invertStateDisplay.

Examples 

Example: Single checkbox with toggle 

A toggle

A toggle

EXT:my_extension/Configuration/TCA/Overrides/115-tx_myextension_conference-published.php
<?php

use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;

defined('TYPO3') or die();

ExtensionManagementUtility::addTCAcolumns('tx_myextension_conference', [
  'published' => [
    'label' => 'my_extension.db:conference.published',
    'exclude' => true,
    'config' => [
      'type' => 'check',
      'renderType' => 'checkboxToggle',
    ],
  ],
]);
ExtensionManagementUtility::addToAllTCAtypes(
  'tx_myextension_conference',
  'published',
  '',
  'after:location',
);
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checkboxToggle: Instead of checkboxes, a toggle item is displayed.

Example: Single checkbox with toggle inverted state display 

The field hidden that TYPO3 adds for ctrl > enablecolumns > disabled
'hidden' => [
  'label' => 'core.db.general:enabled',
  'exclude' => true,
  'config' => [
    'type' => 'check',
    'renderType' => 'checkboxToggle',
    'default' => 0,
    'items' => [
      [
        'label' => '',
        'invertStateDisplay' => true,
      ],
    ],
  ],
],
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invertedStateDisplay: A checkbox is marked checked if the database bit is not set and vice versa.