The Westek SLC5BCW-4 Outdoor/Indoor Dusk to Dawn Light Control for CFL/LED Bulbs easily transform your exterior lights to come on at dusk and off at dawn. This controller is rated for up to 150 Watts with the socket facing up and up to 100 Watts with the socket facing down. Do not use this control with another light control or dimmer in the same circuit. Use only with clear glass as the sensor will not work through opaque or frosted glass. To use, screw this control into any medium base socket and then screw your incandescent or compact fluorescent bulb into the control. AmerTac manufacturing brands offer complete lines of distinctive decorative home accent products that include trend-setting wall plates, money saving LED night lights, innovative under cabinet lighting and LED battery operated lights. More functional product lines include energy-saving timers, dimmers and lighting controls, as well as an extensive offering of consumer electronics accessories for the home and office. AmerTac's products are distributed to leading home centers, lighting showrooms, mass merchandisers and supermarket chains throughout North America.