Title：SK-2002 Telphone Network Alarm System
Type：SK-2002
Feature：◆ 2 telephone alarm cardSupport network user number to reach 10000 householdsThis machine is an independent alarm functi...

Title：SK-2008 Receiving Alarm Center System (Large and middle scale)
Type：SK-2008
Feature：1.Support at most 8 routes telephone line at the same time receiving alarm and display the caller number.2. Compatibilit...