&lt;p id=&quot;product_reference&quot;&gt;&lt;label&gt;Part No.&lt;/label&gt;&lt;span&gt; &lt;/span&gt;&lt;span id=&quot;newRef&quot; class=&quot;editable&quot; itemprop=&quot;sku&quot;&gt;C4416&lt;/span&gt;&lt;/p&gt;&lt;div id=&quot;short_description_block&quot;&gt;&lt;div id=&quot;short_description_content&quot; class=&quot;rte align_justify&quot; itemprop=&quot;description&quot;&gt;&lt;ul&gt;&lt;li&gt;A high-quality optical smoke detector offering outstanding detection performance at a very competitive price.&lt;/li&gt;&lt;li&gt;Manufactured by C-TEC in the UK.&lt;/li&gt;&lt;li&gt;Third-party certified to EN54-7 by Intertek.&lt;/li&gt;&lt;li&gt;Wide 6-33V DC operating voltage.&lt;/li&gt;&lt;li&gt;Two 8mm x 2mm ultra-bright red LED indicating strips offering 360º visibility.&lt;/li&gt;&lt;li&gt;Drift compensation functionality ensures detector sensitivity is automatically calibrated to suit prevailing conditions and/or increased contamination levels allowing a greater than 8 year life-span. &lt;/li&gt;&lt;li&gt;Compatible with our ActiV C4408D diode, C4408 non-diode and C4408R relay bases.&lt;/li&gt;&lt;/ul&gt;&lt;div class=&quot;image_spacer&quot;&gt;&lt;p class=&quot;socialsharing_product list-inline&quot;&gt; &lt;a href=&quot;https://www.c-tec.com/documents/Third_Party_Approval_Certificates/ActiV_Fire_Detectors_Intertek_Certificate.pdf&quot;&gt;&lt;img src=&quot;https://www.c-tec.com/img/logo-intertek.png&quot; alt=&quot;LPCB&quot; /&gt;&lt;/a&gt; &lt;a href=&quot;https://www.c-tec.com/documents/COCPs/ActiV_Detectors_COCP.pdf&quot;&gt;&lt;img src=&quot;https://www.c-tec.com/img/logo-ce.png&quot; alt=&quot;CE&quot; /&gt;&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;