Simplex 4903-9418 Category : Simplex The lack of TrueAlert branding on the front of the alarm, as well as the odd grille, are signs that this is an early version of the TrueAlert. Brand SimplexModel 4903-9481Manufacturer SimplexType Alarm (Speaker/Strobe, 4-Wire)
Space Age A32-BL-SFXC-TJ24B-0000 Category : Space Age ElectronicsThis alarm came with a Wheelock EH-EL1 mounted onto it.
Edwards 899B-01 Category : EST/EdwardsThis strobe cover would fit on an alarm such as the Edwards 802-2B.
