Federal Signal’s Model 302X SelecTone® Amplified Speaker is designed to meet UL 1480 intelligibility requirements producing crisp, clear tones, digital voice messages and live public address in harsh environments with high ambient noise levels. 

The rugged speaker cone and projector are constructed of spun aluminum. The all new internal circuitry, tone module, and gain control are contained in a housing constructed of cast aluminum. All surfaces are sealed with powder-coat paint and assembled with stainless steel hardware. Dust- and moisture-proof gaskets provide protection from the elements. This housing incorporates a tool-less rear cover design, eliminating the need for torque specific hardware and solves the problem of missing or lost fasteners.

SelecTone Amplified Speakers are used individually or as part of a plant-wide emergency notification system. The Model UTM Universal Tone Module, with 32 tones, or the TM33 Custom Tone Module is plugged into a single SelecTone Amplified Speaker for stand-alone use or into a SelecTone Command Unit for plant-wide signaling. 

For plant-wide signaling, a Connector Kit is required for each SelecTone Amplified Speaker and wired to a central controller.  SelecTone Command Units and CommCenter® Digital Message Centers broadcast tones, voice messages, melodies and live  public address to an unlimited number of SelecTone Amplified Speakers. 

Applications for SelecTone include emergency warning, plant evacuation, start and dismissal, public address, and process control.


Voltage 24VDC
24VAC 50/60Hz
Mount Swivel Bracket
Operating Current 1.35 Amps @ 24VDC
0.43 Amps @ 120VAC
0.26 Amps @ 240VAC
Standby Current 0.13 Amps @ 24VDC
Standby Current 0.31 Amps @ 24VAC
0.26 Amps @ 120VAC
0.13 Amps @ 240VAC
Decibel Output 114 @ 10 Feet
124 @ 1 Meter
Operating Temperature Range -67°F - 151°F (-55°C to 66°C)
Height 18.800 in
Width 16.700 in
Depth 19.500 in
24VAC/DC 16.40 lb
120/240VAC 17.70 lb
24VAC/DC 32.40 lb
120/240VAC 33.70 lb

Ordering Information

Model Types
Model Description UPC
302X-024 SelecTone speaker/amplifier, 30 watt, 24VAC/DC, explosion-proof 78297920100
302X-120-240 SelecTone speaker/amplifier, 30 watt, 120/240VAC, explosion-proof 78297922146
UTM Universal tone module 782979202172
TM33-SD Tone module, custom, Series D 78297922733
AM25CK Connector card, 25vrms 78297960085
AM70CK Connector card, 70vrms 78297960086
300CK 10 Vrms, 1 Vrms
T-300CK 2.7 Vrms, 1 Vrms
E-300CK 1 Vrms, 1 Vrms
Replacement Parts
Description Part Number UPC
PCBA, 24V, 15W, Class D K2005618A-03 782979241126
PCBA, 120/240V, 15W, Class D 300X and T-300X K2005618A-05 782979241133
Projector assembly, 14W, gray, 300X K8593100A 782979205500
Bracket assembly, mounting, black, 300X, 304X, 302X, 314X K8593071A 782979205050
Gasket, diaphragm K8590243A 782979205531