The Simplex 2903 visual plate series replaced the 4050-80 models in the late 1970's and would eventually be replaced themselves by the 4903 series in the early 1990's. Unlike most A/V retrofit plates, many of the 2903 models have the audio notification horn mounted from the back.
The 2903 visual notification plates include several models and are most commonly paired with a 2901 / 2903 series audio notification horn devices. Both units have been tested - All strobe and horn device function as they should. The plates and horns are in excellent condition with minimal wear. Boxes have some light wear / paint markings.
Measurements and Specifications: Faceplate Measurements: 8.25" L / 5.5" W / 2.2 D Box Measurements: Approx. 035 A, 75-87 Db Min.This item was removed from a site undergoing demolition and functioned as intended upon removal.