"The switch seems solid enough, however one major annoyance is with the earth terminal. There is only one, so it is quite a wrestling match trying to get two 10mm earth cables into one terminal. - The noname switch it replaced had two terminals and was very easy to wire.
"I don't believe MK can make these, they must be just branded MK. I have had to change about 5 in the last 5 years, the rotary indicator jamms up and at best you have to WD40 that part of it. Also one earth terminal is a poor design, would have expected better from the top manufacturer."
"MK has a reputation for quality - this is the reason I chose this brand to replace a failed inferior product fitted by a Contractor. The shower is used once a day and the power is turned off after each use. Now after approx six months it crackles when switched on. The shower is not heating water when the switch is operated so no significant current is being switched. A second switch pull is necessary to give a 'clean' contact. It will be replaced as soon as I find a better quality switch that will fit the square box."