SOUNDER (SIMPLEX)
TrueAlert Non-Addressable Horn – Model 4901-9820
The TrueAlert 4901-9820 is a high-performance audible
notification appliance delivering a loud, penetrating, harmonically rich
sound for life safety alerts. It supports two operation modes:
- Standard
(Free-Run) Mode: Activated directly from a NAC, providing continuous
or coded output as controlled by the panel.
- SmartSync
Mode: Allows two-wire operation with compatible Simplex panels,
enabling synchronized audible and visible alerts on the same circuit. This
reduces installation complexity and cost while maintaining separate
control of horns and strobes.
Key Features:
- High-intensity
audible notification for life safety events
- Compatible
with standard NAC or SmartSync two-wire operation
- Flexible
mounting: Semi-flush or surface mount on single-gang, double-gang, or
4″ square electrical boxes
- Optional
accessories available for enhanced mounting options
- Ideal
for retrofit or new construction applications
Features – TrueAlert Non-Addressable Horn (4901-9820)
- Low-current
24 VDC operation for energy-efficient performance
- Harmonically
rich sound output, suitable for steady or pulsed operation
- Diode-polarized
input for connection to reverse-polarity, supervised NACs
- Durable
housing: Rugged, flame-retardant red thermoplastic with white “FIRE”
lettering (white cover available separately)
- Switch-selectable
operation modes:
- Free-Run
Mode: Tracks conventional NAC outputs; supports Temporal, March
Time, or coded patterns
- SmartSync
Mode: Accepts two-wire control commands from compatible Simplex
panels for synchronized audible and visible notifications
- Flexible
installation for retrofit or new construction applications
