The Simplex 2902 series was a series of voice evacuation, siren and institutional signals used by the Simplex Time Recorder Company in the 1980's. this was the first time for Simplex to use voice evacuation on their systems. The chimes were manufactured by Faraday, and are the same mechanism as Faraday's bells. The speakers mostly were made by Auto-Call. Model #'s NOT A COMPLETE LIST: 2902-9711: Speaker, early w/ "S" Logo light, 4'' square 2902-9732: Speaker, no lamp/logo, later than 9711, 4" square 2902-9734: Speaker, flush mount, beige 2902-9739: Speaker/Strobe, similar to 2903, uses 2975-9145 box. (AT RIGHT) 2902-9207: Chime, red, vibrating, black bar, 24vdc 2902-9234: Chime, red, single stroke, grey bar, 24vdc 2902-9042: Chime, red, grey bar, 4vac 2902-9052: CHIME/VIB 120VAC BEIGE 2902-9071: CHIME/SS 4VAC RED 2902-9240: Chime, red, s.s., red, 24vdc 2902-9242: CHIME/SS 1.2VDC RED | ![]() ![]() |

