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(
    [name] => wirelessBatteryExplanation
    [title] => Alarm Grades by Power Type (BS 5839 Part 6)
    [content] => <table width="100%" cellpadding="0" cellspacing="0">
   <tr>
	   <th width="20%">Power Type</th>
	   <th width="50%">Description</th>
	   <th width="15%">BS 5839-6: 2013 Grade</th>
	   <th width="15%">BS 5839-6: 2019 Grade</th>
   </tr>
   <tr>
	   <td class="description-image">Battery Operated<br />(Alkaline)</td>
	   <td>9V alkaline battery operated smoke and heat alarms.</td>
	   <td>Grade F</td>
	   <td class="description-image">Grade F2</td>
   </tr>
   <tr>
	   <td class="description-image">Battery Operated<br />(Lithium)</td>
	   <td>Sealed longlife lithium battery powered smoke and heat alarms</td>
	   <td>Grade F (may be accepted as a replacement to grade D)</td>
	   <td class="description-image">Grade F1 and F2</td>
   </tr>
   <tr>
	   <td class="description-image">Mains Powered<br />(Alkaline Back-up)</td>
	   <td>Mains powered smoke and heat alarms with 9v alkaline backup batteries</td>
	   <td>Grade D, E and F</td>
	   <td class="description-image">Grade D2, F1 and F2</td>
   </tr>
   <tr>
	   <td class="description-image">Mains Powered<br />(Lithium Back-up)</td>
	   <td>Mains powered smoke and heat alarms with sealed lithium backup batteries</td>
	   <td>Grade D, E and F</td>
	   <td class="description-image">Grade D1, D2, F1 and F2</td>
   </tr>
</table>
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