Aurora AC Transformer with Photo Eye and Timer 40 or 100 Watt

AC Transformer by Aurora Deck Lighting provides safe 12V AC power to your low voltage outdoor lighting. Includes a built in photo eye sensor or timer to program your lights to automatically turn on at dusk, then set your preferred duration. Use for installing low-voltage outdoor deck lights. Product Details 12 Volt AC Transformer Maximum output 40 Watts or 100 Watts Weather resistant plastic housing For incandescent and LED lights Built-in photo eye and timer How to determine transformer size? Multiply number of lights by watts per fixture. Add 10% for wiring and connections.  Optional: Leave room for more lights in the future. Round up to the next closes transformer size. To avoid early bulb burnout, use at least 50% of the total transformer size.  Sample: 24 LED lights x 1 watt per light, plus 10% 24 x 1 = 24 + 2.4 = 26.4, Round up = 27 watts totalUse a 36 watt DC transformer.    AC or DC TRANSFORMER? Always check the lighting specifications for recommended transformer type.