The IQ611MR relay module provides two sets of outputs which will be activated simultaneously. When the outputs are activated, the device red LED will indicate the event condition by blinking longer. A return to the normal condition will cause the event to disappear and the device red LED indicator will return to blinking every 4 seconds. The IQ611MR is an intelligent addressable module and takes one address on the Signaling Line Circuit (SLC) or Data Communication Link (DCL) of the fire alarm control panel. It is a UL listed product according to UL864 or Fire Protective Signaling Systems for indoor use and FM.