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Castle Noise Activated Warning Sign System

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  • Warn workers of excess noise levels
  • Warning sign illuminates over adjustable trigger level
  • Clear EC-approved sign and flashing beacon
(Ex. VAT) £540.00 (Inc. VAT) £648.00

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  • Description

    Castle Noise Activated Warning Sign System

    The Castle Noise Activated Warning Sign System is designed for use in environments where workers are subjected to intermittent, excessive noise. In such conditions, clear warning of excess noise allows all those present to put on appropriate hearing protection, thus preventing hearing loss. The Castle Warning Sign System is an excellent solution as it combines the Castle GA902 Noise Activated Sign with a Castle GB004 flashing beacon. This clearly signals to everyone present that hearing protection is needed.

    The Castle GA902 detects sound through its inbuilt Castle electret microscope and, once the trigger level is exceeded, its twin fluorescent lights will illuminate the 450mm x 190mm sign’s EC-approved message stating ‘Approved Hearing Protection Must Be Worn’. In addition, the beacon will flash at a steady rate in order to make the message even clearer. The trigger level can be set between 75dB and 112.5dB at 2.5dB intervals and the trigger time can also be adjusted between 5 and 30 seconds. Frequency weighting is set as ‘A’ in accordance with IEC651 Type 2 and the sign is capable of operating off a 240V or 110V supply.

    Castle part number: NK022

    Key Features

    • Warn workers of excessive noise
    • EC-approved sign wording
    • Bright illumination of sign and beacon
    • Adjustable trigger level and time
    • Runs off 240V or 110V supply
  • Specification


    • 75 dB to 112.5dB steps switch selectable 2.5dB variable calibration control (factory set)


    • User adjustable 5 to 30 seconds


    • Push to test button
    • Mains power ‘on’ indicator


    • Characteristic: Averaging


    • ‘A’ in accordance with IEC651 Type 2


    • Slow response (1000 mS)


    • Built in Castle electret


    • Switched AC power feed for external beacon. Change-over relay contact sets.


    • 200v to 240v AC, 50Hz/60Hz
    • 110v to 120v AC, 50Hz/60Hz
    • (240v version supplied as standard unless otherwise stated at time of order)


    • Two 8w, 12” fluorescent tubes


    • Overall: 520 x 200 x 120
    • Viewable Screen area: 450 x 190
  • Supplied Accessories

    • Castle GA902 Noise Activated Sign
    • Catle GB004 Mini Beacon 
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  • Delivery Information

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    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

    We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only (this might exclude certain areas in the north of Scotland).

    Customers outside the UK:

    Test-Meter.co.uk exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail admin@test-meter.co.uk with your name, address and the items you would like to order for an accurate shipping quote or go to http://www.test-meter.co.uk/test-equipment-export for more information.

    For more information on delivery, please see our terms and conditions.