This module provides dual channel monitoring of normally open contact fire alarm and supervisory devices, and also provides single pole changeover contacts for the control of auxiliary devices such as fire shutters. Three tri-colour LED's are provided to indicate the status of each channel. LED's A and B refer to the two input channels. Each LED can be set by panel command to pulse green each time the module channel is polled. In case of an alarm the panel can switch the red indicator on continuously. The Yellow LED is controlled by the module and blinks to indicate an open circuit on the input circuit. This fault indication is always overridden by a panel command to turn the red LED on. LED C refers to the output channel. The LED can be set by panel command to pulse green each time the channel is polled. The LED will be switched continuously on Green by command from the control panel when the relay contacts are in the energised state. The TC809E1068 relay contact ratings are 30VDC, 2Amp or 30VAC, 0.5Amp (Resistive load).