Edwards EST SIGA-IO Input/Output Module (Standard Mount) – UL/ULC Listed-Smoke DetectorsSIGA IO and MIO Input Output Modules are intelligent analog addressable devices that form part of GE Securitys Signature line of products. The actual operation of the SIGA IO and MIO is determined by the personality code selected by the installer, which is downloaded to the module from the Signature loop controller during system configuration. Specifications Weight 0. 4 lbs Series Signature Series Brand Edwards, EST Open Datasheet