An invaluable product.......

I. · 7 September 2012

I have been using one of these RCD Adaptors for several years now, always with electric tools (both inside and outside).About a year ago I decided to install a chest freezer in my shed; having discovered the prohibitive costs involved to run a new circuit outside I decided to run electrical cable to the shed inside protective conduit.The power would then need to come from one of the sockets in the kitchen, and although I would be very carful with the construction there was always the chance of water getting into the wiring due to the nature of what I have built.So this is what I did, and I purchased another one of these Masterplug RCD Adaptors to run the current through, just in case a 'leak' occured and the circuit blew; I could not risk this resetting the main RCD for the kitchen, this would have caused no end of problems!It has now been up and running for approximately a year and it has worked perfectly (touch wood!). It has to be reliable because we have our freezer at the other end, and this contains most of our food, if it were to go wrong it would obviously cause us big problems.It is an extremely simple device to use; as long as the little light is on then the current is working properly. There is a reset button to use if the circuit is broken, and a test button to show that the device is working as it should.It is well proportioned and is barely wider than a standard plug, so it is possible to use the other socket if this device is used on a two gang plug socket; it is worth bearing in mind though that when a plug is inserted the whole set-up does extend quite a distance from the wall, it is not an excessive amount but is worth taking into account if you plan to use the device in a restricted space.Overall a really great product, and to be honest I can't understand why anyone who uses any sort of power tools (particularly outside) wouldn't have one; the RRP on Bolo is currently £13.25, but it is being sold at the reduced price of just £5.74, this is outstanding value and is about half the price it is being sold for at B&Q.Highly recommended!

A must have for extension leads power and gardening tools.

D.S. · 7 March 2026

If you’re using power tools, extension leads, or garden equipment, this is not optional: It’s essential.The Masterplug Single Socket RCD Safety Adaptor is a literal life saver. It trips instantly if it detects a current leak, preventing potentially fatal electric shocks. Proper use could mean the difference between minor inconvenience and serious injury. Always plug high-risk tools into an RCD, and never bypass it. For anyone working outdoors or with DIY power tools, this is the one item you must have.

Superb surge plug

N. · 1 April 2026

Good quality surge plug for the money

Fantastic for peace of mind!

C. · 2 December 2025

Great plug for added safety when using an oil radiator in a garden office.The test mechanism is easy to use, and the brand is one we know and trust too.Quite a large plug, as you'd expect, so don't use it anywhere space is tight and you'll also want access to the buttons so I wouldn't use it anywhere hard to reach.

Essential for safety and peace of mind. Will come in useful for all sorts of things you probably haven't even thought of yet!

P.M. · 31 October 2015

I have trusted Masterplug RCDs for twenty years and have never had any problem with them. The design doesn't appear to have changed much in that time either. I lost one and bought this to replace it. Everyone should have one and they are very reasonably priced, highly recommended and not a number 1 best seller in RCDs (at time of writing) for nothing.You may buy one for the obvious hazard of using a lawn mower, hedge trimmer, circular saw or other power tool where there is a chance that you might cut or damage the cable. You might get for your Christmas lights, fish tank pump, leaky washing machine, pressure washer or dehumidifier that keeps getting walked into, or a leaky kettle, where there is a risk or worry that water may mix with electricity. But also if you have one in stock and something unexpected happens you will be glad you had it for safety and peace of mind. For example, an appliance you rely on becomes suspicious like a phone charger getting hotter than usual, or you buy and appliance second hand and don't trust it, or you are suspicious of a cable that may have been damaged but looks ok, or you're going to hoover the car but it looks like it might rain. So many times I have been glad to have one handy.It will cut out when there is a very small current leak and before your mains trip switch or fuse goes and is designed to save your life by cutting power very very quickly. It is money well spent, cheap peace of mind and this particular product is the only one I would buy because I feel I can trust it.Highly recommended.

Ideal for safety

B. · 15 January 2026

Does the job, packaged well.

Good value

g.w. · 18 December 2025

Great back up unit for my outside Christmas lights

Keeping you safe

n. · 22 January 2026

Very nice RCD plug. I have bought two of the these and they are working as described. Very pleased that I am safe at the other end of the cable.