Simplex 4090-9807 — surface-mount trim plate with LED viewing window for the 4090-9001 Supervised IAM.The 4090-9001 carries a status LED that flashes roughly once every three seconds to show it is talking to the panel. A plain blank plate hides that diagnostic. This trim plate closes a surface-mounted box and carries a light pipe, so the communications LED stays readable without taking the cover off — what a technician wants when chasing an IDNet or MAPNET II point. For surface mounted boxes; the semi-flush equivalent is 4090-9806 Requires the 4090-9810 mounting bracket, which is ordered separately Galvanized steel; mounting screws included Specified for the 4090-9001 Supervised IAM, which mounts in a standard single-gang box Cover only — no module, bracket or electrical box is included. Do not substitute 4090-9801 or 4090-9802: those are the semi-flush and surface covers called out for the 4090-9002 Relay IAM and the 4090-9101/-9106 Monitor ZAMs, not for the 4090-9001.
