Simplex TrueAlert 4901 - Mounting the TrueAlert Non-Addressable Horn; Mounting Methods and Enclosure Compatibility

4901 TrueAlert Non-Addressable Horn Installation Instructions
See Figure 3 for mounting the TrueAlert horn to the enclosure box. When surface mounting the horn (4905-9937
or 4905-9940
), a surface mount skirt is recommended. Refer to the 4905 TrueAlert NAC Surface Mount Skirt
Installation Instructions (574-790) for this mounting application.
Tighten mounting screws snugly (careful not to overtighten).
For semi-flush mounting, install the box, either flush with the wall, or with a maximum recess of 0.25-inch (6.35 mm).
Figure 3. TrueAlert Horn Mounting
Mounting the
TrueAlert
Non-
Addressable
Horn
BOTTOM OF UNIT
SEE NOTE 4
4-INCH (102 mm)
SQUARE
ELECTRICAL BOX
NOT SUPPLIED
HORN COVER
HOUSING
SWITCH SW1 (RECESSED IN HOUSING)
OFF = FREE-RUN MODE (SHOWN)
ON = SmartSync

MODE
(See Note 3)
NAC + and NAC - TEST
POINTS
(See Note 3)
TABS FIT INTO
SLOTS ON THE
INSIDE OF THE
HORN COVER
Notes:
1. The TrueAlert horn attaches directly to standard single-gang, double-gang, or 4-inch (102 mm) square electrical
box (not supplied) mounted semi-flush, or surface to the wall’s surface.
2. There are two holes for single-gang, and four holes for double-gang electrical box mounting. Secure the housing
to the single-gang or double-gang box using two mounting screws (#6/ 32 x 1 1/8-inch (35 mm) long, not
supplied). The two mounting screws are placed cross corner (opposite top and bottom holes) on the double-gang
installation. Mounting the horn to the 4-inch (102 mm) square electrical box is shown.
3. Switch SW1, NAC+ and NAC– test points are accessible after mounting with the horn cover removed.
4. To remove cover, depress snap release with a flat tip screwdriver while pulling up cover with your other hand.
DOUBLE-GANG
MOUNTING HOLES
(See Note 2)
SCREWS FROM 748-472
SHIP GROUP QTY: 2
(MOUNT SCREWS
CROSS CORNER)
4-INCH (102 mm)
SQUARE
MOUNTING HOLES
(See Notes 1 and 2
)
DOUBLE-GANG
MOUNTING HOLES
(See Notes 1 and 2)
SINGLE-GANG
MOUNTING HOLES
SmartSync

ON
Free-Run
4-INCH (102 mm)
SQUARE
MOUNTING HOLES
(See Note 2)
3