Comment Re:The whole automation is missing the point (Score 1) 119
The reason that you're finding it so hard to find non-dimmers in the UK is that we typically don't have a neutral wire in our lighting circuits.
With a dimmer, even when it's turned off it still allows a tiny vampiric current through the circuit - this is to keep the device powered and listening for commands. This current can occasionally be enough to make the bulbs react, which is why most dimmers recommend the inclusion of a bypass in the circuit.
With relays, and a hard on/off decision, there can be no vampiric current. Therefore, when in the 'off' position, the device itself loses power and is unable to respond to commands, negating the whole point of the system.
Relays are usable when there is a neutral wire present, as they can stay powered without opening the circuit, but that's not possible in most UK lighting environments, hence why there are so few non-dimmer solutions on the UK market.