<br><div style="max-height: 350px;"><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">TrueAlert non-addressable horn model 4901-9820 is an audible notification appliance with a loud and penetrating, harmonically rich sound that can be controlled either directly from a standard NAC (freerun operation mode) or by the SmartSync two-wire operation mode. Standard (free-run) operation mode. In the free-run mode, a positive voltage from the controlling NAC will activate the horn according to the desired output of continuous or coded output per the controlling NAC’s capabilities.</span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px;"></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">SmartSync mode. When selected for SmartSync mode and used with compatible Simplex control (refer to list on page 2), this horn can be wired onto the same two-wire NAC circuit as visible appliances but with separately controlled operation. Typical applications are audible notification activated as “onuntil-silenced” and visible notification appliances activated “on-untilreset.” In addition, visible appliances (strobes) on the same circuit are activated with synchronized flashes. SmartSync control two-wire advantage. Allowing these separate controls to be carried on the same two-wire NAC circuit can significantly reduce installation time and expense for both retrofit and new construction. Flexible mounting. This horn can be semi-flush or surface mounted on a standard single gang, double gang, or 4″ square (102 mm) electrical box. Optional accessories are available to increase mounting and application flexibility.</span></p></div><br><div style="max-height: 350px;"><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-weight: bolder;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">Features</span></span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-weight: bolder;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">Low current, 24 VDC electronic horn provides:</span></span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">• Harmonically rich sound output suitable for either steady or pulsed operation</span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">• Diode polarized input for connection to reverse polarity, supervised NACs</span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">• Rugged, high impact, flame retardant red thermoplastic housing with white "FIRE" lettering (white cover is available separately)</span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-weight: bolder;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">Switch selectable horn operation modes:</span></span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">• Free-Run mode tracks the output of a conventional fire alarm control panel notification appliance circuit (NAC)</span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">• SmartSync two-wire control mode accepts horn control commands from compatible control panels (see list on page 2)</span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-weight: bolder;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">Free-Run Mode operation provides:</span></span></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px;"></p><p style="padding: 0px; margin-right: 0px; margin-left: 0px; font-family: Manrope, sans-serif; color: rgb(33, 37, 41); font-size: 16px; text-align: justify;"><span style="padding: 0px; margin: 0px; font-family: Tahoma, ">• Horn activated when NAC is in alarm; suitable for Temporal pattern, March Time patterns, or Coded patterns as determined by control panel operation</span></p></div><br>