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 Audible Tone ATEX Approval Power Source Safety Category Dimensions Weight Diameter Height Length Maximum Detection Voltage Maximum Operating Temperature
RS Stock No. 905-5863
Mfr. Part No.0590 7450
BrandTesto
TWD1,372.00
Each
units
- - - - - Battery CAT 3 1000 V, CAT 4 600 V 155 x 25 x 33mm 63g - 23mm 155mm 1000V ac +50°C
RS Stock No. 528-9703
Mfr. Part No.FLUKE 1AC-II
BrandFluke
TWD1,287.00
Each
units
Voltage - AAA Yes - Battery CAT IV 1000 V - 50g - 25mm 148mm 1000V +50°C
RS Stock No. 375-5422
BrandRS PRO
TWD1,169.00
Each
units
Magnetic Field 0.3mT AAA - - Battery CAT III 1000 V 17 (Dia.) x 152mm 40g 17mm - 152mm 1000V ac +50°C
RS Stock No. 719-0888
Mfr. Part No.TEK100
BrandMartindale
TWD1,799.00
Each
units
Voltage - 9V Yes - Battery CAT III 1000 V, CAT IV 600 V 32 x 22 x 202mm 140g - 202mm 32mm 600V ac +50°C
RS Stock No. 873-2364
Mfr. Part No.LVD1A
BrandFluke
TWD1,623.00
Each
units
- - AAA - - Battery - - - - - - - +50°C
RS Stock No. 850-7688
Mfr. Part No.FLUKE 1AC-E-5PK
BrandFluke
TWD4,902.00
Each
units
Double Flash Visible Indication - AAA - - Battery CAT IV 1000 V - - - - - - +50°C
RS Stock No. 238-3571
BrandRS PRO
TWD764.00
Each
units
- - AAA - - Battery - - - - - - - +50°C
RS Stock No. 788-4606
Mfr. Part No.RSVT7
BrandMartindale
TWD1,169.00
Each
units
- - 9V - - Battery CAT III 600 V, CAT IV 300 V 236 x 44 x 33mm 120g - 33mm 236mm - +50°C
RS Stock No. 897-7144
Mfr. Part No.MARTEK101
BrandMartindale
TWD2,024.00
Each
units
Voltage - 9V Alkaline Yes No Battery CAT IV 1000 V 202 x 36 x 25mm 120g - 25mm 202mm 600V ac +40°C
RS Stock No. 741-4355
Mfr. Part No.FLK2AC/90-1000V
BrandFluke
TWD1,346.00
Each
units
Voltage - AAA - - Battery CAT IV 1000 V - 45.4g - - - 1000V ac +50°C
RS Stock No. 136-5672
BrandRS PRO
TWD684.00
Each
units
Non Contact Voltage - AAA, IEC LR 03, NEDA 24A, 1.5 V Yes - Battery CAT III 1000 V - - - - - 1000V ac -
RS Stock No. 214-467
BrandRS PRO
TWD556.00
Each
units
- - AAA - - Battery - 180 x 45 x 30mm - - - - - +50°C
New
RS Stock No. 192-0591
Mfr. Part No.NC2
BrandMartindale
TWD854.00
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 +40°C
RS Stock No. 186-5507
Mfr. Part No.NCV-1040-EUR
TWD1,547.00
Each
units
Non Contact Voltage >2.5mT AAA Yes - Battery CAT IV 1000 V 156.2 x 23.5 x 27.5mm 62g - 27.5mm 156.2mm 230V ac +40°C
RS Stock No. 136-5674
BrandRS PRO
TWD775.00
Each
units
Magnetic Probe, Magnetic Probe Tip - - - - - CAT II 1000 V, CAT III 600 V, CAT IV 300 V - - - - - 1000V +50°C
RS Stock No. 178-1216
BrandRS PRO
TWD1,325.00
Each
units
Non Contact Voltage - AAA Yes Yes Battery CATIV 1000 V 25 x 23 x 160mm 55g - 160mm 25mm 1000V -
RS Stock No. 146-8046
Mfr. Part No.37872
BrandWiha Tools
TWD851.00
Each
units
Non Contact Voltage - AAA - - Battery CAT III 1000 V ac - 76g 4.2mm - 149mm 230 → 1000V ac -
RS Stock No. 181-5013
Mfr. Part No.2004-780
BrandMegger
TWD809.00
Each
units
Voltage - AAA Yes - Battery CAT IV 600 V 178 x 26mm 48g - - 178mm - +50°C
RS Stock No. 719-0876
Mfr. Part No.RSTEK200
BrandMartindale
TWD2,203.00
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 +50°C
RS Stock No. 141-1995
BrandRS PRO
TWD1,799.00
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 +40°C