Non Contact Voltage & Magnetic Field Indicators

Non-contact voltage detectors are a highly reliable and safe way to detect live wires and conductors without coming into contact with them. They can be used in a wide range of environments due to their compact and portable design, making them perfect for working on the go.


Non-contact voltage & magnetic field indicators feature a wide range of features to enhance the user experience, making it easier to identify live currents and magnetic fields. LED lights are often included to indicate when the device is in contact with a live voltage, in some cases this is also accompanied with a beeping noise.


How do they work?


Also known as a voltage detector, voltage tester pens, sensors or test pens. They allow the user to test electrical conductors without touching them. Non-contact testers are the safest and easiest way to detect electric fields or voltage. Voltage testers utilise what is called capacitive coupling, the user holding the instrument provides a ground reference. The tester then detects changing electric field around the object or objects conducting an AC current (Alternating current). Simply put, the user and the tester pen when near the electrical conductor will cause a small current to flow through the tester from the source, this is how it detects AC voltage.


At RS, we offer a wide range of reliable non-contact voltage testers suitable for DIY enthusiasts at home to electrical engineers. The user-friendly devices ensure quick and efficient testing of voltage in a range of applications and can be used by anyone from a homeowner carrying out renovations to an electrical engineer.


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Viewing 1 - 14 of 14 products
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Description Price Indicator Type Magnetic Sensitivity Battery Type Calibrated Audible Tone ATEX Approval Power Source Safety Category Dimensions Weight Diameter Height Length Maximum Detection Voltage
RS Stock No. 375-5422
BrandRS PRO
£22.20
Each
Units
Magnetic Field 0.3mT AAA - - - Battery CAT III 1000 V 17 (Dia.) x 152mm 40g 17mm - 152mm 1000V ac
RS Stock No. 166-838
BrandRS PRO
£28.92
Each
Units
Voltage - AAA - - - Battery CAT III 1000 V 18 (Dia.) x 146mm 40g 18mm - 146mm 1000V ac
RS Stock No. 167-645
BrandRS PRO
£20.16
Each
Units
Voltage - AAA - Yes - Battery CAT III 1000 V 17 (Dia.) x 146mm 40g 17mm - 146mm 1000V ac
RS Stock No. 123-3287
BrandRS PRO
£55.03
Each
Units
Non Contact Voltage - AAA RSCAL - - Battery CAT IV 1000 V 152 x 22 x 18mm 40 (with Battery)g - 18mm 152mm 1000V ac
RS Stock No. 123-3247
BrandRS PRO
£12.03
Each
Units
Non Contact Voltage - AAA - - - Battery CAT III 1000 V / CAT IV 600 V, CAT IV, CAT lll 152 x 22 x 18mm 40 (with Battery)g - 18mm 152mm 1000V ac
RS Stock No. 136-5746
BrandRS PRO
£64.20
Each
Units
Non Contact Voltage - 1.5 V, AAA, NEDA 24A, IEC LR 03 RSCAL Yes - Battery CAT III 1000 V - - - - - 1000V ac
RS Stock No. 136-5672
BrandRS PRO
£15.20
Each
Units
Non Contact Voltage - 1.5 V, AAA, NEDA 24A, IEC LR 03 - Yes - Battery CAT III 1000 V - - - - - 1000V ac
RS Stock No. 136-5749
BrandRS PRO
£72.38
Each
Units
Non Contact Voltage - 1.5 V, AAA RSCAL - - Battery CAT IV 1000 V - - - - - 1000V ac
RS Stock No. 136-5674
BrandRS PRO
£17.23
Each
Units
Magnetic Probe, Magnetic Probe Tip - - - - - - CAT II 1000 V, CAT III 600 V, CAT IV 300 V - - - - - 1000V
RS Stock No. 141-1995
BrandRS PRO
£40.00
Each
Units
Voltage - AAA, GP Alkaline GN24A LR03 Size AAA - - Yes Battery CAT III 1000 V ac 18 (Dia.) x 151mm 50g 18mm - 151mm 1000V ac
RS Stock No. 141-1997
BrandRS PRO
£83.00
Each
Units
Voltage - AAA, GP Alkaline GN24A LR03 Size AAA RSCAL - Yes Battery CAT III 1000 V ac 18 (Dia.) x 151mm 50g 18mm - 151mm 1000V ac
RS Stock No. 136-5675
BrandRS PRO
£23.38
Each
Units
Non Contact Voltage - 1.5 V, AAA - - - Battery CAT IV 1000 V - - - - - 1000V ac
RS Stock No. 141-1996
BrandRS PRO
£40.00
Each
Units
Magnetic Field 0.3mT AAA, GP Alkaline GN24A LR03 Size AAA - - Yes Battery - - 40g - - - -
RS Stock No. 178-1216
BrandRS PRO
£29.45
Each
Units
Non Contact Voltage - AAA - Yes Yes Battery CATIV 1000 V 25 x 23 x 160mm 55g - 160mm 25mm 1000V