Sealey Mains Tester - 140mm

The Sealey AK1990 is a VDE approved mains voltage tester designed with a screwdriver blade and an ...

Best current price£1.78from Power Tools Direct

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Power Tools DirectSealey Ak1990 Mains Tester 140Mm
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alanwadkinstoolstore.co.ukSealey AK1990 140mm Mains Tester
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Rapid Online - Rapid Electronics Ltd.Sealey AK1990 Mains Tester 140mm 230V
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eBaySealey Mains Tester 140mm 230V
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Tooled UpSealey Mains Tester Screwdriver
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Product Information

Full details

The Sealey AK1990 is an essential tool for electricians and DIY enthusiasts who need a reliable, VDE-approved solution for verifying live mains voltage. Its primary benefit is providing immediate, safe confirmation of electrical presence within a compact, portable design; however, users should note that this device is intended only for voltage detection and should not be used as a primary screwdriver for high-torque fastening tasks.

All features

Model Part NumberAK1990
BrandSealey

Extended Product Information

FAQs

Can I use this to tighten heavy screws?

No, this tool is designed primarily as a voltage tester. Using it to apply high torque may damage the handle or blade.

Does this require batteries?

No, the Sealey AK1990 operates using the current flowing through the circuit being tested.

Is this tool safe for use on DC circuits?

This device is specifically rated for AC mains voltage (100-250V) and is not intended for DC applications.

How do I know if it is working correctly?

Test the device on a known live power source before use to verify the internal lamp is functioning.

What does VDE approved mean?

It means the tool has been tested and certified by the VDE Testing and Certification Institute, ensuring it meets strict safety and quality standards for electrical work.

Troubleshooting

Tester does not light up when touching a known live terminal

Ensure your finger is firmly touching the contact point on the end of the handle, as your body acts as the ground path for the circuit.

Dim or flickering light

This often indicates a poor contact connection; verify that you are making clean contact with the conductor.

Pros and Cons

Pros

  • Compact 140mm size fits easily in any tool belt or pocket
  • Transparent handle design offers high visibility
  • Certified for electrical safety environments
  • Lightweight build reduces fatigue during extended use

Cons

  • Not designed for heavy-duty screwdriving tasks
  • Limited to AC voltage detection only
  • Requires direct contact with conductors to function

Setup, Compatibility & Care

There is no complex setup required for the Sealey AK1990; it is ready to use immediately out of the package. It is compatible with all standard 100-250V AC mains systems found in residential and commercial environments. To ensure long-term reliability, keep the tool clean and dry. Avoid dropping the device on hard surfaces, as this may crack the transparent handle or damage the internal testing mechanism. Regularly inspect the insulation for nicks or wear; if the insulation is compromised, the tool should be replaced immediately for your safety.

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