I have real reservations about this product.  It doesn't have a timer, just comes on when it gets dark and stays on for 6 hours.  BUT.. its sensor is so sensitive that being near any light means it thinks it's not dark yet, so doesn't turn on.  Or if headlights or a security light pops on, it will turn itself off.  I had this as part of a yard display with other Christmas lights and it won't come on if ANYTHING else is on.  Looks nice if you kept it in a dark place and never turned any lights on near it, but useless in a normal front yard, near a driveway or street, or need motion detector lights that might come on.