GE NetworX Interactive Security Systems for the DIYer.

Interlogix NetworX NX-4 Cellular GSM Security System
Discontinued & Replaced by NETWORX6-GSMKIT
Interlogix NetworX NX-6 Cellular GSM Security System
List Price: $440.82
Your Price: $293.88
Interlogix NetworX NX-8 Cellular GSM Security System
List Price: $484.02
Your Price: $322.68
Interlogix NetworX NX-8E Cellular GSM Security System
List Price: $551.05
Your Price: $367.37