CAST Compact W-3-3.1 Wall VAD ONLY



  • LPCB certified to EN54-17 & 23 and Kiwa Telefication certified to EN54-13.
  • Provides 'W-3-3.1' light distribution when wall mounted.
  • Can also provide 'C-3-8' light distribution when ceiling mounted.
  • Onboard short-circuit loop isolator.
  • 7mA typical alarm current (460µA typical quiescent current) @ 27-40V DC (VAD lit).
  • Group addressing facility allows multiple devices to be operated simultaneously.
  • IP21C rated.


More details

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More Information

'CAST' is the world’s most-advanced 'distributed intelligence’ fire alarm system protocol. Conceived, designed and realised by C-TEC as part of a five-year, multi-million pound project, it involved the creation of a powerful proprietary communication protocol (C-TEC Addressable System Technology, CAST) and multiple control panels & field devices. Now available to purchase, its key features include:

• 255 devices per loop.
• Autonomous decision-making for faster response times.
• Multiple type codes.
• 40V loop drive voltage.
• Two ‘soft’ addressing options – automatic via the panel or manual via a powerful handheld programmer.
• Powerful multi-level addressing facilitates easy device addition and swapped device identification.
• Multiple functionality at a single address (integrated devices) - coming soon.
• Volumes, tones & detector modes can be changed at compatible panels.
• High-speed data transmission and robust data transfer.
• Intrinsically EN54-13 compliant.
• Provides geographical location of short and open circuit faults (a short circuit isolator is included as standard in every CAST field device).
• Replace device function.
• Future seamless integration with other CAST life safety systems reducing energy, servicing, installation and repair costs.
• Designed and manufactured in the UK.

Technical Specifications

Approvals/certificationsLPCB certified to EN54-17 & 23 and Kiwa Telefication certified to EN54-13.
Protocol/compatibilityCompatible with C-TEC's CAST protocol Addressable Fire Panels.
Application/operationProvides W-3-3.1 coverage when wall mounted. Alternatively can be ceiling mounted to provide C-3-8 coverage.
VAD category & coverageW-3-3.1 or C-3-8.
Flash rate & colour0.5Hz / White.
Supply/operating voltage27 to 40V DC.
Quiescent current460µA typical.
Alarm current7mA @ 27 to 40V DC (VAD lit).
IndicatorsPolling (red LED).
Product dimensions (mm)102mm diameter x 63mm deep.
IP RatingIP21C (Type A).
Operating conditions/temperature-10ºC to +55ºC. Max. 95% RH (Non-condensing).



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VAD coverage (with multiplication factors applied)

VAD coverage depends on factors such as ambient light and viewing angle (direct or indirect). The table below summarises how the coverage of the CA458A/SR increases or decreases based on these factors. To use the table, calculate the lux level of the area requiring coverage, determine whether the viewing angle will be direct or indirect then read off the coverage in the relevant column. For further information refer to our VAD System Design Guide, downloadable from the Documentation tab below.

 Ceiling Mounted Ceiling Mounted Wall MountedWallMounted
Lux level in area requiring coverageDirect ViewingIndirect ViewingDirect ViewingIndirect Viewing
000-101 lux8.3m H x 22.4m W3.9m H x 10.4m W15.6m H x 16.12m W5.4m H x 5.58m W
101-200 lux7.2m H x 19.2m H3.6m H x 9.6m W13.2m H x 13.64m W5.1m H x 5.27m W
201-300 lux5.7m H x 15.2m W3.0m H x 8.0m W9.6m H x 9.92m W4.2m H x 4.34m W
301-400 lux4.2m H x 11.2m W2.4m H x 6.4m W6.9m H x 7.13m W3.6m H x 3.72m W
401-500 lux3.3m H x 8.8m W1.8m H x 4.8m W5.4m H x 5.58m W3.0m H x 3.1m W
501-600 lux2.7m H x 7.2m W1.5m H x 4.0m W3.9m H x 4.03m W2.7m H x 2.79m W
601-700 lux2.1m H x 5.6m Wnot applicable3.0m H x 3.1m Wnot applicable
701-800 lux1.5m H x 4.0m Wnot applicablenot applicablenot applicable

Approval Certificates

Approval Certificate (LPCB)


EC Certificate of Conformity (CPR)


Declaration of Performance (C-TEC)


Declaration of Conformity (C-TEC)


EN54-13(2017) System Certificate