Edwards EST SIGA-CRH High Power Control Relay ModuleThe Edwards EST SIGA CRH high power control relay module is an intelligent addressable interface for Signature Series loops, providing one relay with two Form C contacts for switching higher voltage or current loads such as door holders, fans, and dampers. It uses electronic addressing, automatic device mapping, and removable terminal blocks to simplify commissioning and service while keeping the SLC side low current and supervised. Key