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 over 4000 voice/tone 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** -40°F to 149°F (-40°C to 65°C)
Input Voltage 120 or 240VAC +/- 10%, 50/60 Hz Single-phase (two separate models)
Input Current 7 A Max
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,
Contact Closure (min) 500ms < 2k Ohms
Maximum Load 600 Ohms
Microphone Input Impedance 10k 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
Control Cabinet Type 4 or 4X
Battery Cabinet Type 4 (vented)
Net Weight 170 lb (77.13 kg) (minus amplifiers)
** HTR2 or HTR4 battery heater option required for -40°C rating.

Ordering Information

Model Types
Model Description UPC
UV Siren control, one-way 78297921324
UVH Siren control, 1-way VHF band radio 782979702764
UVU Siren control, 1-way UHF band radio 782979702993
UVTD Siren control, no radio
UVTDH Siren control, 2-way digital, VHF (136-174Mhz) 782979702948
UVTDU Siren control, 2-way digital, UHF (403-470Mhz) 782979702979
UVTD-IP Siren control, IP enabled
UVTD-LL Siren control, landline interface
Product # Description UPC
FSPWARE Federal programming software (Non-digital applications) 78297970500
FS-PL1 Tone Coded and Digital Coded Squelch Decode 78297970499
MNC-MC MCP microphone 782979211037
Replacement Parts
Description Part Number
FUSE,200A,BUSS #JJN-200(used in DC/FC/UV/2001-AC) Q148A147A