&lt;p&gt;&lt;strong style=&quot;margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif; background-color: initial; color: rgb(153, 51, 51); font-size: 22px; line-height: 18px;&quot;&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp;&lt;img alt=&quot;&quot; src=&quot;http://www.everspring.com/Upload/images/Why%20Everspring%20GSM%20Alarm%20System_1_400x400.png&quot; style=&quot;margin: 0px; padding: 0px; width: 300px; height: 300px;&quot;&gt;&lt;/strong&gt;&lt;strong style=&quot;margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif; background-color: initial; color: rgb(153, 51, 51); font-size: 22px; line-height: 18px;&quot;&gt;&lt;img alt=&quot;&quot; src=&quot;http://www.everspring.com/Upload/images/Why%20Everspring%20GSM%20Alarm%20System_4_400x400.png&quot; style=&quot;margin: 0px; padding: 0px; width: 300px; height: 300px;&quot;&gt;&lt;br&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp;&lt;img alt=&quot;&quot; src=&quot;http://www.everspring.com/Upload/images/Why%20Everspring%20GSM%20Alarm%20System_2_400x400.png&quot; style=&quot;margin: 0px; padding: 0px; width: 300px; height: 300px;&quot;&gt;&lt;img alt=&quot;&quot; src=&quot;http://www.everspring.com/Upload/images/Why%20Everspring%20GSM%20Alarm%20System_3_400x400.png&quot; style=&quot;margin: 0px; padding: 0px; width: 300px; height: 300px;&quot;&gt;&lt;/strong&gt;&lt;span style=&quot;color: rgb(85, 85, 85); font-family: Arial, Helvetica, sans-serif; background-color: rgb(246, 251, 254);&quot;&gt;&lt;/span&gt;&lt;/p&gt;&lt;div style=&quot;margin: 0px 0px 0px 40px; padding: 0px; color: rgb(85, 85, 85); font-family: Arial, Helvetica, sans-serif; background-color: rgb(246, 251, 254);&quot;&gt;&lt;br&gt;&lt;br&gt;• Operation range of RF &amp;gt; 150M in open space&lt;br&gt;• Support total up to 50 zones, zone 1~9 can be renamed&lt;br&gt;• 3 protection zone types: intruder, 24hrs, and delay&lt;br&gt;• Backup battery up to 5-hour operation time (optional)&lt;br&gt;• Built-in siren 95dB at 1m, 3 levels of volume adjusted by APP&lt;br&gt;• Total 112 devices supported&lt;br&gt;• Built-in microphone to record a 10 second alert message&lt;br&gt;• Voice call &amp;amp; SMS to 5 receivers each for event or&lt;br&gt;emergency alert&lt;br&gt;• Indicators for GSM signal, arm/disarm/partial arm&lt;br&gt;• Tamper protection&lt;br&gt;• RF signal anti-jamming function&lt;br&gt;• Notifications for door sensor not completely closed&lt;br&gt;&lt;br&gt;&amp;nbsp;&lt;/div&gt;&lt;p style=&quot;margin-bottom: 15px; padding: 0px; color: rgb(85, 85, 85); font-family: Arial, Helvetica, sans-serif; background-color: rgb(246, 251, 254);&quot;&gt;&lt;img alt=&quot;&quot; src=&quot;http://www.everspring.com/Upload/images/How%20the%20System%20Works2_800x400.jpg&quot; style=&quot;margin: 0px; padding: 0px; width: 740px; height: 370px;&quot;&gt;&lt;/p&gt;