Edwards SIGA-CT1HT Single Input ModuleThe SIGA CT1 Single Input Module, SIGA CT1HT High Temperature Single Input Module and SIGA CT2 SIGA MCT2 Dual Input Modules are intelligent analog addressable devices used to connect one or two Class B normally open Alarm, Supervisory, or Monitor type dry contact Initiating Device Circuits (IDC). The actual function of these modules is determined by the personality code selected by the installer. This code is downloaded to the module from the