Edwards EST SIGA-MCRR UIO Plug-in Polarity Reversal Relay Module

The Edwards EST SIGA-MCRR is the UIO plug-in polarity reversal relay for Signature Series loops, used to group-activate compatible sounder bases by reversing a 24 VDC output. It snaps into multi-position UIO backplates for compact builds and faster field wiring, with on-board green/red status LEDs for quick checks. Key Specifications: Type: Intelligent addressable polarity reversal relay module (UIO plug-in) Core Function(s): Reverses 24 VDC polarity to drive groups of sounder bases Loop/Protocol: Signature SLC with electronic addressing and auto-mapping Power: 15.2 to 19.95 VDC from SLC; 75 μA standby, 75 μA active Indicators/UI: Green LED (polled), Red LED (active) Notes: Contact rating 2.0 A at 24 VDC pilot duty; uses one SLC address Compatible Modules & Accessories: SIGA-UIO2R – 2-position UIO backplate SIGA-UIO6R – 6-position UIO backplate System Compatibility: Works with Edwards Signature Series control panels, including EST3, EST3X, and iO Series.