1000W Dimmer suitable for the control of dimmable electronic transformers, toroidal transformers, and tungsten lamps WITHOUT de-rating. Not suitable for use with fluorescent lamps. Leading edge phase control. Dimmer module may be mounted in the ceiling void, cupboard etc.. Dimmer is controlled by momentary switches, therefore there is no buzzing at the switch position. Hold down switch for dimming control. Minimum load 75W, maximum load 1000W. Integrated over-temperature protection fuse. Smooth dimming operation from 0-100% light output. Complies with the latest Electrical Safety standard for dimmer switches EN 60669-2-1:2000 & EN 61058-1:1992+A1. EMC compliance - EN 55015, EN 61000, EN 61547. 1 Year guarantee.