Simplex 4906-9204 Ceiling Strobe imported eBay Simplex 4903-9418 horn strobe is

Simplex 4903-9418 horn strobe is a non-addressable audible and visible notification

Inputs can be independently configured via the fire control panel for alarm

An appliance mounting plate comes with the STI 1219/1229

hospitals and other public buildings

Simplex 4906-9204 Ceiling Strobe imported eBay Simplex 4903-9418 horn strobe isThe Simplex 4906 9204 Ceiling Strobe addressable strobes provide convenient installation to standard electrical boxes. In addition, the strobe is individually address and individual control with power, supervision, and control supply from a Simplex fire alarm control panel providing IDNAC Signaling Line Circuits. In other words, they are visible only (V O) 24 VDC notification appliances with high output xenon strobe, available for wall or ceiling.