The EB22-1 (Slave ) has no switch on the light but can be switched and dimmed in a group using the EB22-2 (Master) or dimmer module LD200
The master version has an integrated switch with dimming funtionality, and can be switched and controlled remotely on request. There is also available as a prebit smart light and can be controlled by a iphone or ipad.
The EB22-3 has an integrated switch with dimming functionality and also switches between red and white.