Edwards EST SIGA-CC2A Class A Dual Signal ModuleThe Edwards EST SIGA CC2A intelligent addressable dual input signal module provides Class A or Class B riser selection for 24 Vdc NACs, 25 or 70 VRMS audio evacuation, and firefighter telephone circuits on Signature Series loops. It supports multiple personality codes for single or dual riser operation, including three and four state telephone with built in ring tone and UL 1971 strobe synchronization, while dual LEDs show normal polling and active