Terrence, Fibaro z-wave dimmers work with just a live connection. I had one on my Vera which has now been changed to a Domoticz and working great. Another plus is it’s the first dimmer I have had that correctly dims the led bulbs I have. Not cheap (£45) but excellent quality and operation. I have also got a Sonoff Touch light switch (£14) as well as other Sonoff gear but it does need a neutral connection. The sonoff gear can all be re flashed to work with mqtt or http automation systems cutting out the Chinese connection completely.