The InterAct™ 501-s meets the need for a cost effective, highly reliable phone for multi-level parking decks, stairwells, hallways and building entrance applications. These line-powered phones feature single or dual solid-state button activation, two high intensity LED indicators, a cast metal bezel assembly and stainless steel housings for surface or flush mount applications. The IA501-s has conformal-coated electronics to support both indoor and outdoor installations and includes a built-in contact closure that may be used to activate a strobe or camera or can be used for door access applications. The flush mount includes the flush mounting box and has an oversized faceplate to eliminate additional trim work.