<br><div style="max-height: 350px;"><p>TrueAlert Non-Addressable Horn – Model 4901-9820</p><p>The TrueAlert 4901-9820 is a high-performance audible<br>notification appliance delivering a loud, penetrating, harmonically rich<br>sound for life safety alerts. It supports two operation modes:</p><ul style="margin-top:0in"><br><li>Standard<br>(Free-Run) Mode: Activated directly from a NAC, providing continuous<br>or coded output as controlled by the panel.</li><br><li>SmartSync<br>Mode: Allows two-wire operation with compatible Simplex panels,<br>enabling synchronized audible and visible alerts on the same circuit. This<br>reduces installation complexity and cost while maintaining separate<br>control of horns and strobes.</li><br></ul><p>Key Features:</p><ul style="margin-top:0in"><br><li>High-intensity<br>audible notification for life safety events</li><br><li>Compatible<br>with standard NAC or SmartSync two-wire operation</li><br><li>Flexible<br>mounting: Semi-flush or surface mount on single-gang, double-gang, or<br>4″ square electrical boxes</li><br><li>Optional<br>accessories available for enhanced mounting options</li><br><li>Ideal<br>for retrofit or new construction applications</li><br></ul><p><br><br></p><p> </p></div><br><div style="max-height: 350px;"><p>Features – TrueAlert Non-Addressable Horn (4901-9820)</p><ul style="margin-top:0in"><br><li>Low-current<br>24 VDC operation for energy-efficient performance</li><br><li>Harmonically<br>rich sound output, suitable for steady or pulsed operation</li><br><li>Diode-polarized<br>input for connection to reverse-polarity, supervised NACs</li><br><li>Durable<br>housing: Rugged, flame-retardant red thermoplastic with white “FIRE”<br>lettering (white cover available separately)</li><br><li>Switch-selectable<br>operation modes:</li><br><ul style="margin-top:0in"><br><li>Free-Run<br>Mode: Tracks conventional NAC outputs; supports Temporal, March<br>Time, or coded patterns</li><br><li>SmartSync<br>Mode: Accepts two-wire control commands from compatible Simplex<br>panels for synchronized audible and visible notifications</li><br></ul><br><li>Flexible<br>installation for retrofit or new construction applications</li><br></ul><p><br><br></p><p> </p></div><br>