Cranford Controls

VTG Spatial Sounder 24Vdc

Product Overview

The VTG family of sounders has been designed to cover a wide spectrum of applications. The 24 volt version is for use with conventional fire alarm systems including two wire (SAV-WIRE®) and as standard comes with 32 tones.

The sounder is supplied with a two-stage alarm override which is activated by a third negative wire from the fire panel.

All tones have been selected to comply with the latest sound patterns and frequencies used throughout the world. All tone options are fully synchronised.


  • 32 tones plus a selectable override tone
  • designed to work with both conventional and two-wire (SAV-WIRE®) systems
  • shallow base IP43 and deep base IP65 versions available
  • unique twist and lock bayonet mounting system
  • removable cover on deep base for surface wiring
  • features base locking system as standard


Voltage Range (Vdc) 15 – 35
Number of Tones 32
Operating Frequency (Hz) 440 – 2900
Temperature Range (C°) -20 to +70
Monitoring Reverse polarity
Protection Rating IP45 (shallow) IP65 (deep)
Boxed Weight (kg) 0.22 (shallow) 0.25 (deep)
Body Colours Available Red or White (ABS Fire Retardant Plastic)



Volume Setting High Med Low
Sound output, typical (dBA) 102.3 97.6 82.1
Sound output, anechoic chamber (dBA) 99.9 95.6 80.1
Sound output, reverberation chamber (dBA) 117.7 110.7 95.3
Max. current consumption @ 24Vdc (mA) 30.8 16.4 8.3
Power consumption @ 24Vdc (mW) 739 394 199


Part Numbers

510-046 Red body, 32 tone, shallow base
510-048 Red body, 32 tone, deep base
510-047 White body, 32 tone, shallow base
510-049 White body, 32 tone, deep base 510