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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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. 905-6721
Mfr. Part No.0590 7450
BrandTesto
£66.90
Each
Units
- - - RSCAL - - Battery CAT 3 1000 V, CAT 4 600 V 155 x 25 x 33mm 63g - 23mm 155mm 1000V ac
RS Stock No. 905-5863
Mfr. Part No.0590 7450
BrandTesto
£23.90
Each
Units
- - - - - - Battery CAT 3 1000 V, CAT 4 600 V 155 x 25 x 33mm 63g - 23mm 155mm 1000V ac
RS Stock No. 716-1064
Mfr. Part No.RSTEK200
BrandMartindale
£88.00
Each
Units
Magnetic Field, Voltage ±10mT 9V RSCAL Yes - Battery CAT III 1000 V, CAT IV 600 V 32 x 22 x 202mm 150g - 202mm 32mm 600V ac
RS Stock No. 719-0876
Mfr. Part No.RSTEK200
BrandMartindale
£49.00
Each
Units
Magnetic Field, Voltage ±10mT 9V - Yes - Battery CAT III 1000 V, CAT IV 600 V 32 x 22 x 202mm 150g - 202mm 32mm 600V ac
RS Stock No. 740-6698
Mfr. Part No.Fluke 2AC/200-1000VC
BrandFluke
£25.00
Each
Units
Voltage - AAA - - - Battery CAT III 600 V - - - 148mm - 1000V ac
RS Stock No. 911-9529
Mfr. Part No.FLK2AC/200-1000VCL
BrandFluke
£64.00
Each
Units
Voltage - AAA RSCAL - - Battery CAT IV 1000 V - - - 148mm - 1000V ac
RS Stock No. 741-4346
Mfr. Part No.FLK2AC/200-1000VCL
BrandFluke
£25.00
Each
Units
Voltage - AAA - - - Battery CAT IV 1000 V - - - 148mm - 1000V ac
RS Stock No. 821-2096
Mfr. Part No.KEWSTICK DUO
£18.00
Each
Units
Voltage - - - - - Battery - - - - - - 600V
RS Stock No. 732-4732
Mfr. Part No.TKED 1
BrandSKF
£452.31
Each
Units
- - AAA - - - - - 250 x 210 x 60mm 104g - 60mm 250mm -
RS Stock No. 850-7688
Mfr. Part No.FLUKE 1AC-E-5PK
BrandFluke
£109.00
Each
Units
Double Flash Visible Indication - AAA - - - Battery CAT IV 1000 V - - - - - -
RS Stock No. 740-1472
Mfr. Part No.VT3
BrandMartindale
£29.00
Each
Units
Magnetic Field, Voltage ±10mT AAA - - - Battery CAT III 1000 V 19 (Dia.) x 170mm 73.6g 19mm - 170mm 1000V ac
RS Stock No. 719-0888
Mfr. Part No.TEK100
BrandMartindale
£40.00
Each
Units
Voltage - 9V - Yes - Battery CAT III 1000 V, CAT IV 600 V 32 x 22 x 202mm 140g - 202mm 32mm 600V ac
RS Stock No. 716-1076
Mfr. Part No.TEK100
BrandMartindale
£79.00
Each
Units
Voltage - 9V RSCAL Yes - Battery CAT III 1000 V, CAT IV 600 V 32 x 22 x 202mm 140g - 202mm 32mm 600V ac
RS Stock No. 847-7739
Mfr. Part No.2824434
BrandGedore
£38.84
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 897-7144
Mfr. Part No.MARTEK101
BrandMartindale
£45.00
Each
Units
Voltage - 9V Alkaline - Yes No Battery CAT IV 1000 V 202 x 36 x 25mm 120g - 25mm 202mm 600V ac
New
RS Stock No. 192-0590
Mfr. Part No.NC1
BrandMartindale
£20.00
Each
Units
Non Contact Voltage >10mT 1.5V AAA Alkaline - Yes - Battery CAT IV 1000V 158 x 20 x 27mm 55g - 27mm 158mm -
New
RS Stock No. 192-0591
Mfr. Part No.NC2
BrandMartindale
£19.00
Each
Units
Non Contact Voltage >10mT 1.5V AAA Alkaline - Yes - Battery CAT IV 1000V 158 x 20 x 27mm 55g - 27mm 158mm 1000V ac
RS Stock No. 181-5013
Mfr. Part No.2004-780
BrandMegger
£17.33
Each
Units
Voltage - AAA - Yes - Battery CAT IV 600 V 178 x 26mm 48g - - 178mm -
RS Stock No. 181-5039
Mfr. Part No.2004-780
BrandMegger
£56.33
Each
Units
Voltage - AAA RSCAL Yes - Battery CAT IV 600 V 178 x 26mm 48g - - 178mm -
New
RS Stock No. 192-0592
Mfr. Part No.NC3
BrandMartindale
£29.00
Each
Units
Non Contact Voltage >10mT 1.5V AAA Alkaline - Yes - Battery CAT IV 1000V 158 x 20 x 27mm 55g - 27mm 158mm 1000V ac
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