UV UltraVoice® Electronic Siren Controller

  • Up to 250 stored message, 17 hours of available audio
  • Decodes single-tone, two-tone, DTMF and AFSK digital
  • Quiet test standard
  • Up to 8 controller zones
  • Stackable siren functions
  • Distinct dual tone capacity
  • Highly efficient pulse width modulated amplifiers
  • Windows®-based programming software (optional)


    The Federal Signal UltraVoice® controller combines micro-processor based system control with highly efficient amplifiers to deliver optimized tones and voice capability for electronic sirens. The UltraVoice controller can generate and amplify single or dual frequency warning tones and comes with seven pre-set warning signals. In addition, the controller has been designed specifically to reproduce high quality live or pre-recorded-voice capability.

    The controller includes a NEMA 4X cabinet housing the control module, up to eight 400 watt amplifiers, and a NEMA 3R battery cabinet. The unit may be equipped with a plug-in programmable receiver module, utilizing DTMF or two-tone sequential activation protocols. A digital voice option can be added by plugging in a single mini SD card which can store up to 250 messages.

    Two-way Status System

    The UltraVoice Controller can also be a two-way communication system. A transceiver allows the unit to report status back to a central control point utilizing DTMF or the Commander Software System protocol. Two transceiver ports are available for radio repeating or when using multiple frequencies.

    The two-way option provides information on the following conditions: 

    • AC power
    • Battery voltage
    • Charger operation
    • Activation current
    • Amplifier voltage and current
    • Quiet test (Speakers & Amps)
    • Signal A
    • Signal B
    • Mode of operation
    • Intrusion
    • Local activation
    • SD card status


    Operating Temperature** -22°F to 149°F (-30°C to 65°C)
    Input Voltage 120 or 240VAC +/- 10%, 50/60 Hz Single-phase
    Battery Input Voltage 24 Volts (nom.)
    Operating Voltage 24VDC
    Standby Time Greater than 7 days
    Control Module  
    Signal duration (auto reset) 3 minute standard
    Microphone Input Impedance 10K Ohms
    Audio Distortion 1% THD max,
    Maximum Load 600 Ohms
    Microphone Input Impedance 10k Ohms
    Audio Distortion 1% THD max.
    Contact Closure (min) 500ms < 2k Ohms
    Amplifier Module  
    Frequency Response: (300 to 3kHz) ±3dB (ref. 1kHz)
    Output Voltage (Tone and PA): (to speaker drivers) 70 Vrms (nom.)
    Input Impedance: (per amplifier) 100Ohms
    Conteol Cabinet Type 4 or 4X
    Battery Cabinet Type 4 (vented)
      ** The siren can operate throughout this temperature range provided the battery temperature is maintained at 0°F/-18°C or higher.

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