Seaward Proving Unit MkII for use with the Seaward Live Line Tester (423A911)

Seaward

£292.50 / £351.00 incl VAT

⚡ Reliable Performance Verification: Ensures your LLT Mk2 is operating correctly with a clear, active indicator.
⚡ Network Rail Certified: Complements the certified LLT Mk2 for complete compliance and safety.
⚡ Portable and User-Friendly: Battery-powered and designed for field use with easy-to-follow instructions.

In stock (can be backordered)

Add Calibration to your Proving Unit.

SKU: SEA-PH3-LLT Category: Brand:

Description

Seaward Proving Unit MkII (Part Number: 423A911)

Product Details:

Enhance the reliability of your voltage testing with the Seaward Proving Unit MkII. Designed to complement the Seaward LLT Live Line Tester Mk2, this proving unit is an essential accessory for any professional working on electrified rail systems.

Key Features:

  • Network Rail Certified: Accompanies the LLT Mk2 with the same Network Rail Certificate of Acceptance No. PA05/03345.
  • Portable and Practical: A highly portable, battery-powered unit that ensures your Live Line Tester is functioning correctly in the field.
  • Active Indication: Features a red indicator that illuminates when the unit is active, providing clear confirmation of operation.
  • Stable and Secure: Comes with an integrated case and a wide base to maintain stability on uneven ground, ensuring consistent performance.
  • Convenient Design: Operating instructions are printed on the case for quick reference during use.
  • Output Specifications: Delivers a DC output voltage from a 9V PP3 battery source, with an output voltage of 500V DC nominal and an output current of 10mA into 2k ohms.

What’s Included:

  • Seaward Proving Unit MkII
  • Integrated protective case
  • User manual with operating instructions

The Seaward Proving Unit MkII is the perfect partner for the LLT Mk2, providing you with the confidence that your voltage testing is accurate and compliant.

🚚 Testersmans Shipping Policy

Free Mainland GB Delivery Over £150

We offer free delivery on most mainland Great Britain orders over £150 (ex VAT).
This applies across England, Wales, and most of Scotland, excluding certain remote or offshore postcodes.

If your order total falls just short of £150, or you’re a returning customer, feel free to contact us — we may be able to offer a discount code or delivery workaround.
📞 01945 738112 | ✉️ [email protected]


📦 UK Delivery Options

We work with both Royal Mail and DHL to offer reliable and flexible delivery across the UK:

  • Royal Mail – Best suited for lighter parcels and for customers in remote regions, including the Highlands, Islands, and Northern Ireland.
  • DHL – Ideal for most mainland UK orders, providing fast, tracked delivery and excellent reliability for time-sensitive shipments.

Our checkout system automatically displays the available delivery services for your postcode and order weight, ensuring you always see the most suitable options.

Note: Heavy, bulky, or freight-only orders will be charged separately.
Our website is designed for quick, transactional purchases rather than bulk or palletised orders.
Please contact us in advance for a tailored freight quotation if your order falls into this category.


⏱ Dispatch & Delivery Timing

We aim to dispatch all in-stock orders promptly, but delivery depends on both when you order and which service you select.

  • UK orders: placed by 2:00 PM Monday–Friday are usually dispatched the same day.
  • International orders: placed by 2:00 PM Monday–Thursday are usually dispatched the same day.

Orders placed after these times are processed the next working day. This means delivery may occur the following day or later, depending on the courier and service selected.

Once dispatched, your chosen delivery service determines how quickly your parcel arrives:

  • Standard services We use Royal Mail Tracked 24 or DHL Parcel as our ‘Standard’ services. They are not guaranteed to arrive next working day.
  • Premium services (e.g. Royal Mail Special Delivery or DHL by Noon) offer guaranteed delivery windows.

If your order is time-sensitive, we strongly recommend choosing a guaranteed service or contacting us before ordering to confirm availability.

Please note: For logistical reasons, we may occasionally adjust the delivery method selected at checkout. For example, smaller items may be better suited to letterbox-friendly packaging or may be at greater risk of delay or loss via certain services. We actively monitor courier and postal service disruptions—including strikes and delays—and may modify shipping arrangements to help ensure timely and secure delivery.


📅 Busy Periods & Delays

We always aim to dispatch promptly, but delivery times may be affected by:

  • Seasonal demand (e.g. Christmas, bank holidays, or industry shutdowns)
  • Courier network delays outside our control
  • Supplier lead times or calibration requirements for certain equipment

If your delivery is time-critical, please contact us before ordering so we can confirm stock and courier availability.


🌍 International Shipping

We ship worldwide using UPS Express Saver® and other trusted global courier partners. All international shipments are tracked and generally dispatched Monday to Thursday to ensure smooth customs clearance and transit.

Estimated delivery times:

  • Europe: 1–2 working days
  • North America: 2–3 working days
  • Asia-Pacific & Rest of World: 3–5 working days

Delivery times vary depending on location, customs clearance, and local courier performance.


💰 Taxes, Customs & Import Duties

International customers are responsible for any applicable taxes, customs charges, or import duties.
These are not included in our product or shipping prices.

Your courier will typically provide a secure payment link for any import charges once your parcel reaches customs.
If import fees are refused and the parcel is returned, we will issue a refund minus all incurred shipping and return costs.


📍 Using Your Own Courier

If you would prefer to arrange collection via your own courier (UK or international), please contact us before placing your order to coordinate collection from our Wisbech warehouse.


📝 Important Notes

  • Please ensure your delivery address and contact number are correct at checkout.
  • Undelivered parcels may be returned to us after a short holding period.
  • Redelivery or return fees may apply, even if your order originally qualified for free delivery.
  • By placing an order, you confirm your understanding and acceptance of this policy.

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