Description The 4090-9116 Addressable IDNet Communications Isolators provide isolation of IDNet communications to improve installation convenience and increase system integrity. Isolation is automatically activated when an output short circuit is detected and isolation is manually selected from the control panel to aid in wiring troubleshooting. Specifications Compatible with IDNet Signaling Line Circuits (SLCs) of the Series 4007ES, 4008, 4010ES, 4100ES or 4100U Simplex® fire alarm control panel providing: IDNet, IDNet+, IDNet 1+, IDNet 2 or 2+2 output circuits IDNet (see additional information on pages 2 and 3) Each port can serve as an input or output, ports are automatically separated when a communications short occurs Isolation can also be activated from the control panel for system diagnostics Mounts in a standard 4″ (102mm) square electrical box, optional adapter plate available for mounting in a 4 11⁄16″ (119mm) square electrical box The LED flashes to indicate communications; optional covers are available to display the LED after installation