The SR785LN/O is a dynamic, omnidirectional, low-impedance gooseneck paging microphone with normally-open switch for single zone paging. Designed for applications where ruggedness, dependability and durability are the main requirements. Microphone housing is constructed of die-cast zinc alloy to stand up to the toughest abuse and conditions. Features a recessed aluminum grille with a windscreen and durable satin-chrome finish.