Martindale VT12/PD-S Voltage Indicator and Proving Unit Kit
Martindale Electric VT12 Voltage & Continuity Tester
Martindale VT12/PD-S Voltage Indicator and Proving Unit Kit - Image 3

Martindale VT12/PD-S Voltage Indicator and Proving Unit Kit

Martindale

£164.00 / £196.80 incl VAT

⚡ Detect voltage from 12V to 690V with additional voltage level indication

⚡ Perform additional tests including continuity and single-pole phase

⚡ Martindale PD440S Proving Unit acts as known voltage source

Free Mainland GB Delivery on orders over £150 Fast Dispatch from our UK Warehouse Price Match Available on Many Products Need Advice? Call 01945 738112
SKU: MAR-VT12PD-S Category: Brand:

Description

Martindale VT12/PD-S Voltage Indicator and Proving Unit Kit:

The Martindale VT12/PD-S Voltage Indicator and Proving Unit Kit is a handy bundle for checking that electrical circuits are safely isolated before starting work on them. It consists of the Martindale VT12 Voltage Indicator, the MartindalePD440S Proving Unit and a useful carry case.

The Martindale VT12 Voltage Indicator is a two-pole voltage detector capable of sensing AC/DC voltage from 12V to 690V. It has a handy LED bar-graph display which shows nominal voltage level at 12V, 24V, 50V, 120V, 230V and 690V. All the user needs to do is insert the poles into the voltage source and the tester will automatically indicate any potential.

In addition to standard voltage detection, the Martindale VT12 can perform a continuity test up to 500kΩ and a single-pole phase test. The rugged construction and ergonomic design makes it comfortable to use and sturdy enough to withstand the challenges of regular use.

An extremely useful device, the featured Martindale PD440S proving unit provides operators with a way to prove their two-pole voltage tester performance and in line with safe isolation procedure. By supplying a constant 440V 50Hz voltage level, the only input required of the user is to introduce the poles to the corresponding probe terminals on the proving unit. The output will last for up to 10 seconds or less if the probe tips are removed beforehand.

A useful carry case is also provided with separate compartments for the two individual instruments. It has padded shoulder strap and a special flap allows the PD690 to be used without being taken out of the case.

Martindale part number: VT12PD-S

Key Features:

  • Voltage detection: 12V to 690V
  • Nominal voltage indication: 12V, 24V, 50V, 120V, 230V and 690V
  • Single-pole phase test
  • Continuity test
  • PD440S Proving Unit included
  • Handy carry case with shoulder strap

What’s In The Box?

  • Martindale VT12 Voltage Indicator
  • Martindale PD440S Proving Unit
  • Carry case
More Information
SpecificationVoltage Detector

  • Maximum working voltage: 690V DC & AC rms
  • Nominal voltage threshold indications: 12, 24, 50,
  • 120, 230, 690V AC/DC
  • Nominal voltage threshold tolerance: Conforms to
  • BS EN61243-3:2010
  • Range detection: Automatic
  • Response time: <0.5s
  • Frequency range: DC, 0-65Hz
  • Test current: In<3.5mA / Is<50mA
  • Duty ratio: 30s ON (operated) / 240s OFF (recovery)
  • Auto power on: >12V DC/AC rms
  • Overvoltage protection: 690V DC or AC rms

SINGLE POLE PHASE TEST

  • Voltage range: 100 to 690V AC rms
  • Frequency range: 45 to 65 Hz
  • Overvoltage protection: 690V DC or AC rms

CONTINUITY

  • Resistance range: 0 to 500 kΩ
  • Test current: 3µA
  • Overvoltage protection: 690V DC or AC rms

ENVIRONMENTAL

  • Temperature (Operating & Storage): -10°C to 55°C
  • Humidity (Operating & Storage): ≤ 85% R.H.
  • Altitude: up to 2000m

GENERAL

  • Power: 2 x 1.5V, AAA alkaline batteries (IEC LR03, NEDA 24A)
  • Battery power consumption: 250mW approx. (max 30mA)
  • Dimensions: 205(L) x 67(W) x 27(D) mm
  • Weight packed: 130g approx.
  • Includes: 2 x 1.5V AAA batteries, instructions

SAFETY

  • Conforms to BS EN61243-3, BS EN61010-1 CAT IV
  • 300V, CAT III 600V.
  • Class II, Double Insulation
  • Pollution Degree: 2
  • IP rating: IP54

EMC

  • Conforms to BS EN61326-1

Martindale PD690 Proving Unit

  • Output voltage: 700V nominal
  • Output frequency: 50Hz nominal

ENVIRONMENTAL

  • Operating temperature: -10°C to 40°C at max. 70% R.H.
  • Altitude: up to 2000m
  • Pollution degree: 2

GENERAL

  • Power: Internal batteries or external power source
  • Internal batteries: 6 x 1.5V, AA alkaline batteries (IEC LR6, NEDA 15A)
  • External power source: 12V DC max. at 2A min.
  • External power socket: 2.5mm jack socket, centre positive
  • Dimensions: 143 x 84 x 50mm.
  • Weight packed: 400g approx. with batteries
  • Includes: 6 x 1.5V AA alkaline batteries, instructions
  • Martindale VT12 Voltage Indicator
  • Martindale PD440S Proving Unit
  • Carry case

🚚 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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