Installing/replacing the switch

Fitting or replacing a switch — 250 CZK. It covers isolating, swapping the accessory, wiring and testing. Change a switch when it crackles under the finger, sticks halfway, or is visibly damaged — and when you are refreshing the look and swapping a whole row at once, in which case order them all together and it costs much less. Two-way switching uses a different accessory, so say if that is what you have. Smart switches need a neutral in the box.