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Knightsbridge TE4B Non-Contact Voltage Tester 80-1000V AC CAT III

£1299
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
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Description

The Knightsbridge TE4B is a non-contact voltage tester that detects AC voltage between 80V and 1000V without requiring physical contact with live conductors. The tester uses capacitive coupling to sense electric fields around live cables, terminals and switch gear, providing both visual LED indication and an audible beep when voltage is present.

Designed for electricians, facilities maintenance and DIY users checking for live circuits before working on installations, the TE4B fits in a tool belt or pocket at 159mm long and 27.5mm thick. The tester operates on two AAA batteries (sold separately) and features an on/off control switch to prevent accidental activation during storage or transport. The CAT III overvoltage category rating means it's suitable for use on fixed installations up to 1000V including distribution boards, sub-mains and final circuits.

The blue polycarbonate body provides impact resistance and electrical insulation, while the tapered white tip allows the sensor to be placed into tight spaces around terminals and cable entries. The IP20 rating makes this suitable for indoor dry electrical environments but not outdoor or damp locations. The on/off switch extends battery life between uses and prevents false alerts from ambient electromagnetic fields when the tester is off.

Specification
Length 159 mm
Width 21 mm
Depth 27.5 mm
Construction Polycarbonate
Finish Blue
IP Rating IP20
Warranty 1
Downloads

Product Specification Sheet

Frequently Asked

What does CAT III mean?

CAT III is an overvoltage category rating indicating the tester is designed for use on fixed installations including distribution boards, sub-mains and final circuits up to 1000V. It provides protection against transient voltage spikes typical in these applications.

Does it require batteries?

Yes. The TE4B operates on 2 x 1.5V AAA batteries, which are not included. The on/off switch helps extend battery life by preventing continuous operation when not in use.

Can it be used outdoors or in damp locations?

No. The IP20 rating means the tester is designed for dry indoor electrical environments only. It should not be used in outdoor, damp or wet conditions.

How does it indicate the presence of voltage?

The TE4B provides both visual indication via an LED light and an audible beep when AC voltage between 80V and 1000V is detected. Both alerts activate simultaneously when voltage is present.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Knightsbridge TE4B is a non-contact voltage tester that detects AC voltage between 80V and 1000V without requiring physical contact with live conductors. The tester uses capacitive coupling to sense electric fields around live cables, terminals and switch gear, providing both visual LED indication and an audible beep when voltage is present.

    Designed for electricians, facilities maintenance and DIY users checking for live circuits before working on installations, the TE4B fits in a tool belt or pocket at 159mm long and 27.5mm thick. The tester operates on two AAA batteries (sold separately) and features an on/off control switch to prevent accidental activation during storage or transport. The CAT III overvoltage category rating means it's suitable for use on fixed installations up to 1000V including distribution boards, sub-mains and final circuits.

    The blue polycarbonate body provides impact resistance and electrical insulation, while the tapered white tip allows the sensor to be placed into tight spaces around terminals and cable entries. The IP20 rating makes this suitable for indoor dry electrical environments but not outdoor or damp locations. The on/off switch extends battery life between uses and prevents false alerts from ambient electromagnetic fields when the tester is off.

    Specification
    Length 159 mm
    Width 21 mm
    Depth 27.5 mm
    Construction Polycarbonate
    Finish Blue
    IP Rating IP20
    Warranty 1
    Downloads

    Product Specification Sheet

    Frequently Asked

    What does CAT III mean?

    CAT III is an overvoltage category rating indicating the tester is designed for use on fixed installations including distribution boards, sub-mains and final circuits up to 1000V. It provides protection against transient voltage spikes typical in these applications.

    Does it require batteries?

    Yes. The TE4B operates on 2 x 1.5V AAA batteries, which are not included. The on/off switch helps extend battery life by preventing continuous operation when not in use.

    Can it be used outdoors or in damp locations?

    No. The IP20 rating means the tester is designed for dry indoor electrical environments only. It should not be used in outdoor, damp or wet conditions.

    How does it indicate the presence of voltage?

    The TE4B provides both visual indication via an LED light and an audible beep when AC voltage between 80V and 1000V is detected. Both alerts activate simultaneously when voltage is present.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.