Schneider Electric Merten MTN577899 is a push-button dimmer.Its matching mounting box can be recessed into the surface of the wall with flush type.Being made of metal, plastic material, this push-button dimmer is quite reliable and resistant.230V is the rated operational voltage.Besides it is halogen free halogen free, which is good for your health.And the control type of this push-button dimmer is infrared and button, push-button, radio and button.The fixing mode of this device is by screws and claws.The IP rating of this device is IP20.What’s more, this device is qualified as a green premium product, with minimal use of hazardous substances.And it is mercury freeand heavy metal free, which takes care of the environment and your health as always.