Show text beside checkbox depending on whether it is checked or unchecked

Currently, I have a angularjs table that looks like this.

Here is the code;

<script src="http://ift.tt/1mQ03rn"></script>
<div ng-app="app" ng-controller="CheckCtrl">
    <table class="table table-hover data-table sort display" style="width:100%">
        <thead>
        <tr>
            <th class="Serial_">
                Serial
            </th>
            <th class="Name_">
                Name
            </th>
            <th class="ID_">
                ID
            </th>
            <th class="On_off_">
                On/off
            </th>
        </tr>
        </thead>
        <tbody>
        <tr ng-repeat="item in check_items">
            <td></td>
            <td></td>
            <td></td>
            <td> <input type="checkbox" ng-checked="item.ON_OFF == '1'" ng-click="rowSelected(item)"></td>
        </tbody>
    </table>
</div>

<script>
  var app = angular.module('app',[]);
  app.controller('CheckCtrl', ['$scope', '$http', function ($scope, $http) {
      $scope.check_items = 
        [
           {
             SERIAL:'Test Serial',
             NAME:'Test Name',
             ID : 10,
             ON_OFF : '1'
           }
        ];

      $scope.rowSelected = function(row)
      {
          console.log(row);
      };
   }]);
  </script>

I would like the text "On" to appear beside each checkbox in each row whenever it is checked. The text "Off" will appear beside each checkbox in each row whenever it is unchecked.

I am using angularjs v1.