Westek 150 Watts Screw-In Outdoor Dusk-to-Dawn Light Control - brand new in package - $10 firm PRODUCT DESCRIPTION: - 150 Watts max - Turns incandescent lights on at dusk, off at dawn - Just screws in - no wiring - Compact design fits most smaller enclosed outdoor fixtures - For use with incandescant and halogen bulbs only. NOTE: For use with incandescent / halogen bulbs 150 Watts or less if bulb is installed in open fixture. Do not use bulb larger than 75 Watts if bulb is installed in closed or poorly ventilated fixture. To extend bulb life and increase energy savings, unit will decrease light output 20% to 25%. Do not use this control with another light control or dimmer in the same circuit. Do not use with yellow "bug light" bulb. Do not use with opaque, frosted glass or "jelly jar" fixtures.