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TIS 851 Voltage & Continuity Tester - Self Proving

4.5 (105 reviews)
SKU: 241120223940004 EAN: 5060508210030
• Built in torch\n• Self test function\n\n\n\n\n\n\n\nWith LCD and LED display this is an exclusive voltage and continuity tester, with built in self test\nthat conforms fully to BSEN 61243-3:2010 and HSE GS38 12B. Features additional built in two\npole phase rotation test.\nWill not trip any RCD when testing between live and earth. Digital LCD and LED voltage indication\nalso shows presence of voltage without battery power.\nWill not trip any RCD when testing between live and earth. Digital LCD and LED voltage indication also shows presence of voltage without battery power.\n\nAC/DC Voltage to 690V\nContinuity Test with Buzzer\nPhase Rotation Test\nCat III 1000V, CATIV 600V\nBuilt in Self Test\nPolarity Test\nAuto Power On/Off\nProtective Case included\nBatteries included\n2 Years Warranty
Brand TIS
Current Type AC
Display Digital
Frequency Range Voltage/Continuity Tester
MPN TIS851
No features listed
No items listed

Customer Reviews 105

4.5
105 reviews
5 star
79
4 star
16
3 star
2
2 star
1
1 star
7
Excellent tester with built in Proving, Brilliant
5.0
March 1, 2026
41bf0be5-6be3-5ed0-93cb-14d02df4c5c7 Verified Purchase

This is my first proper voltage tester, I've always got by with a pen type tester and a multi meter.
This is so much easier and quicker and I am really pleased with it.
One thing that put me off buying this type of tester before was the need to buy a proving unit,
But with the TIS851 tester it has built in proving and it works a dream.
Really happy and would definitely recommend it.

Tis voltage indicator
4.0
February 28, 2026
ABKELECTRICAL Verified Purchase

Good tool could benefit from retractable ends rather than screw on as these get lost pretty quick

Solid Tool
5.0
February 6, 2026
7a9c180c-33b3-5c6c-9587-cc6f62c474f0 Verified Purchase

Includes batteries & nice case (which included a small pouch in which you can keep the batteries. (We all know of tools we have gone back to with the batteries leaked) The tool itself is solid and did it's job well.

Easy to use Voltage and Continuity Tester
5.0
December 22, 2025
Adam Amateur Verified Purchase

Works straight out of the package. It is straightforward to use. Note that to use any voltage tester whatsoever you must understand electricity, volts, amps, ohms, watts etc. And you must read the instruction manual. After that, this is easy to use, and I have already resolved three electrical issues around the house and garden with this device. I would have no hesitation in recommending it.

Electrical tester
5.0
October 18, 2025
Brainboxer Verified Purchase

Well designed and easy to use. I had checked online before visiting the store, and bought it and was back home within 30 mins. Parking outside store, no queue, and knowledgeable member of staff made transaction very quick and reassuring.

Great bit of kit
5.0
September 20, 2025
f7454231-f747-5b15-9582-bcea803ce3b5 Verified Purchase

Great test equipment. Great feature is the self proving facility Would recommend to all sparkles

Good product
5.0
June 29, 2025
AMN PandHtg Verified Purchase

Pleased with this product. Replaced my old one and work’s well.

Still need a proving unit
1.0
May 4, 2025
RWLX Verified Purchase

The packaging and reviews suggest self proving, but the enclosed instructions say test on a live supply. Realistically that means you’ll still need to carry a proving unit. Misleading.

Excellent!
5.0
April 29, 2025
JK4190 Verified Purchase

Excellent bit of kit, does what it says on the tin!

Doesn't work as expected.
1.0
April 13, 2025
My name is Nick Verified Purchase

I wanted to use this as a more reliable method to determine whether a wire is live. This device tells me the wire is live even when power is switched off at the consumer board. I cannot therefore trust this device and must revert to the old method.

Essential Safety Equipment
5.0
March 25, 2025
Ridgewalker Verified Purchase

Simple unit that does the job. Don't mess about with electricity without one, it could save you a lot of pain.

Great Product
5.0
March 4, 2025
Nidias Decor Verified Purchase

Easy to use and understand. Also, feels good quality. Great Product!

Great tester
5.0
February 19, 2025
Dougnorwich Verified Purchase

Great little tester at a great price, does everything I need it too handy lcd v panel and audible

Easy volt meter
4.0
February 5, 2025
Voht Verified Purchase

Nice easy volt meter, only issue is, when the continuity like shines it shine through to the volt detectors lamps, so got to be careful when reading it.

Brilliant piece of kit
5.0
January 30, 2025
Jeanette Holdsworth Verified Purchase

Brilliant piece of kit and use it for all our engineers

Great Product. will purchase from here next time.
5.0
January 1, 2025
KJHSmith Verified Purchase

Great Product. will purchase from here next time.

Good bit of kit..
5.0
December 29, 2024
Rusty 1968 Verified Purchase

Was purchased as a present for apprentice electrician… he is very pleased with it and he hasn’t electrocuted himself or anyone else.. it’s compact and light.. would recommend..

Easy to use voltage testers
5.0
December 22, 2024
AWC Verified Purchase

Great price for what you are getting
Very easy to use and the fact it’s self proving is even better

Great kit with great price
5.0
December 18, 2024
RangieMan Verified Purchase

Great piece of kit and good quality too. Easy to use and understand. Also, able to prove and come with a safe and secure carry case. Best price for an all-in-one Voltage and Continuity tester and Carry case.

Ideal for us on boilers
5.0
December 10, 2024
FoxtrotTwo Verified Purchase

Compact but Ideal for checking appliances, like boilers and thermostats

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