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    Electrical4less Reviews 4.9 Based on 1452 reviews
    UK Mainland Free Delivery £75 + VAT
    30 Day Return Policy
    Next Day Delivery Cut Off Time 3PM*

    TIS

    Founded in 2005, Test Instrument Solutions (TIS) provides electricians, maintenance engineers, and industry professionals with a comprehensive range of electrical testing equipment. Our products are distributed through electrical wholesalers across the UK and Ireland, allowing customers to see and test units before purchase.

    The TIS 570 Earth Leakage Clamp Meter

    TIS | 570 | AC/DC Earth Leakage Clamp Meter
    1 in stock
    More available within 1 - 3 working days *
    SKU: TIS 570
    £212.17
    TIS HT304K Reference Cell For Irradiance Measurement

    TIS | HT304K | Reference Cell For Irradiance Measurement
    Delivery usually within 1 - 3 working days *
    SKU: HT304K
    £296.45
    TIS HT305 Reference Cell

    TIS | HT305 | Reference Cell
    Delivery usually within 1 - 3 working days *
    SKU: HT305
    £296.45
    TIS HT9025 1500V DC Solar PV Clamp Meter

    TIS | HT9025 | 1500V DC Solar PV Clamp Meter
    Delivery usually within 1 - 3 working days *
    SKU: HT9025
    £519.75
    TIS I-V400W Solar I-V Curve Tester

    TIS | I-V400W | Solar I-V Curve Tester
    Delivery usually within 1 - 3 working days *
    SKU: TIS I-V400W
    £2,872.10
    TIS I-V500W Solar I-V Curve Tester

    TIS | I-V500W | Solar I-V Curve Tester
    Delivery usually within 1 - 3 working days *
    SKU: TIS I-V500W
    £3,372.60
    TIS IV600 Advanced I-V Curve Tracer

    TIS | IV600 | Advanced I-V Curve Tracer 1500V and 40A
    Delivery usually within 1 - 3 working days *
    SKU: TIS IV600
    £7,680.75
    TIS MC4TL MC4 Test Leads

    TIS | MC4TL | MC4 Test Leads
    Delivery usually within 1 - 3 working days *
    SKU: TIS MC4TL
    £19.47
    TIS PT300N Temperature Probe for PV Panels

    TIS | PT300N | Temperature Probe for PV Panels
    Delivery usually within 1 - 3 working days *
    SKU: PT300N 
    £189.18
    TIS PT305 Temperature Probe For PV Panels.

    TIS | PT305 | Temperature Probe For PV Panels
    Delivery usually within 1 - 3 working days *
    SKU: PT305 
    £103.90
    TIS PV-ISOTEST Solar PV Multifunction Tester

    TIS | PV-ISOTEST | Solar PV Multifunction Performance Tester
    Delivery usually within 1 - 3 working days *
    SKU: TIS PV-ISOTEST
    £1,305.15
    TIS PV1 Solar Irradiance Meter

    TIS | PV1 | Solar Irradiance Meter
    Delivery usually within 1 - 3 working days *
    SKU: TIS PV1
    £110.50
    TIS PVCHECKS-PRO 1500V 40A Solar Commissioning Tester

    TIS | PVCHECKS-PRO | 1500V 40A Solar Commissioning Tester
    Delivery usually within 1 - 3 working days *
    SKU: TIS PVCHECKS-PRO
    £3,580.50
    TIS PVCHECKS-PRO PLUS Solar Commissioning Tester Kit

    TIS | PVCHECKS-PRO PLUS | Solar Commissioning Tester Kit
    Delivery usually within 1 - 3 working days *
    SKU:  TIS PVCHECKS-PRO PLUS
    £4,182.35
    TIS SOLAR I-Ve Multifunction I-V Curve Tracer

    TIS | SOLAR I-Ve | Multifunction I-V Curve Tracer
    Delivery usually within 1 - 3 working days *
    SKU: SOLAR I-VE
    £5,790.40
    TIS SOLAR02 Remote Temperature and Irradiance Unit

    TIS | SOLAR02 | Remote Unit for Irradiance, Temperature & PV Module Inclination
    Delivery usually within 1 - 3 working days *
    SKU: SOLAR02
    £712.25
    TIS SOLAR03 Remote Temperature and Irradiance Unit

    TIS | SOLAR03 | Remote Temperature and Irradiance Unit of PV Modules
    Delivery usually within 1 - 3 working days *
    SKU: SOLAR03
    £619.85
    TIS PV2KIT/ELITE Solar PV Kit

    TIS |PV2KIT/ELITE | Elite Solar PV Kit
    Delivery usually within 1 - 3 working days *
    SKU: TIS PV2KIT/ELITE
    £308.75
    TIS PKIT Professional Lockoff Kit

    TIS PKIT Professional Lockoff Kit
    1 in stock
    More available within 1 - 3 working days *
    SKU: TIS PKIT
    £108.00 £95.04
    TIS 1000 13A Socket Tester with Sounder

    TIS 1000 13A Socket Tester with Sounder
    Delivery usually within 1 - 3 working days *
    SKU: TIS 1000
    £12.60 £11.09

    Proudly serving electricians and construction projects across Fulham, Chelsea, and the wider London area — and nationwide with fast next-day delivery by courier.

    📲 Need something sorted fast? Message us on WhatsApp at 07926 999 412 — no waiting, no hassle, just answers.

    © 2026 Electrical4less
    We accept Visa We accept Mastercard We accept Maestro We accept PayPal We use Amazon Pay We use Apple Pay We use Google Pay
    Next Day Delivery

    Cut-Off Time and Order Information
    To ensure your order qualifies for next day delivery, please place your order by 3:00 PM. This is subject to all items being available on the shelf at the time of your order. For orders where the total value exceeds £150 + VAT (double our standard carriage-paid order value of £75 + VAT), we are happy to split the delivery into two shipments if some items are needed urgently and others are not immediately available. If you have any questions or need further assistance, feel free to reach out to us via WhatsApp for live support. We’re here to help!

    In Stock Delivery Policy

    Free Next-Day Delivery Over £75 + VAT:
    Orders above £75 + VAT qualify for free next-day delivery via DPD for in-stock items. While we strive for timely dispatch, we recommend placing orders early to avoid potential delays. Once dispatched, unexpected issues may arise despite the courier’s efforts.

    Orders Below £150 + VAT:
    To keep costs manageable, we dispatch your order once all items are ready, including products with longer lead times.

    Need items faster? You can pay for an additional delivery service to receive in-stock items sooner. Simply email us with your order details, and we’ll send you a payment link for the extra delivery cost.

    Orders Above £150 + VAT:
    For larger orders, we can split delivery at no extra cost. In-stock items will be sent immediately, with the remaining items dispatched once available.

    Backorder Delivery Policy

    Items with Lead Times (e.g., 1–3 Working Days):
    This means we need to source the product from our supplier before sending it to you. The estimated dispatch time is displayed on each product page.

    Out of Stock at Supplier:
    If an item is unavailable at the supplier, we will contact you promptly. You’ll have the option to choose an alternative product or request a full refund.

    Didn't find what you're looking for?

    No problem — message us directly on WhatsApp and we’ll help you out.

    We usually respond within minutes during working hours.

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