Simplex 4003-9830 Console Local Operator SurfaceWhen non voice FACUs require the addition of voice and tone generation, Simplex 4003EC Emergency Communications Voice Control Units supply an extensive feature list. Available equipment includes up to 18 remote microphones, up to 5000 W of distributed remote booster amplifiers, and extensive non fire alarm general paging controls. Manual operation requires opening the locked 4003EC cabinet door to access the 8 message selection switches, the local