Simplex 4903 User Manual

l (See Figure 18) For surface or retrofit mounting, follow the procedure below:
1. Mount 2975-9145 back box (N) to wall.
2. Attach 4905-9903 retrofit/surface mounting plate (P) to back box (N).
3. Mount audible/visible assembly to plate (P).
Figure 18
RETROFIT OR SURFACE MOUNTING
FOR 4903 AUDIBLE/VISIBLE
(4904 Visible
only)
B. Mount visible only assembly to single-gang back box (0) as shown in
Figure 19)
NOTE: See Figure 1 (Flasher Units Only) or Figure 2 (Incandescent Units Only)
for amount of light seen from several lens viewing angles.
Figure 19
ATTACHING VISIBLE ONLY ASSEMBLY
TO SINGLE-GANG BACK BOX
PER-21-302 (574-657)
Ed592

Simplex 4903 Specifications

General

Brand	Simplex
Model	4903
Category	Fire Alarms
Language	English