The theben DIMAX 540 plus B is a very small dimmer that can be easily installed behind a standard switch in any flush-mounted box. Even two dimmers, for example for a double switch, usually allow sufficient space for the wiring. Since it does not have a neutral wire, the dimmer is ideal for retrofitting and renovating old buildings. Thanks to an overheating and overcurrent cut-off function and a short-circuit protection, it also offers the highest level of fire safety. https://elecena.pl/product/29422780/5400130-mini-flush-mounted-dimmer-without-neutral-wire-100-m-cable-len 2025-10-10 https://elecena.pl/product/29422780/5400130-mini-flush-mounted-dimmer-without-neutral-wire-100-m-cable-len 2026-02-06