Simplex 4904-9331T Non-Addressable Red Strobe Assembly

The Simplex 4904-9331T Non-Addressable Red Strobe Assembly is a TrueAlert wall-mount notification appliance that delivers a 15 candela strobe to indicate an alarm on a non‑addressable fire alarm system. Cataloged as model 4904-9331 with a red strobe cover, this unit is designed for non‑addressable operation and responds to standard NAC signals from the fire alarm control panel to produce a bright, visible flash. It mounts to a wall box and, when installed, has a total depth of 4 3/8 inches with the strobe in place; a red adapter plate option is available for mounting to specific boxes (for example the 2975-9145 mounting box). This strobe is part of Simplex’s TrueAlert family of notification appliances and represents the 15 cd non‑addressable segment of the line, which also includes higher-output variants in 75 cd and 110 cd configurations.