Perfect shatterproof LED Bulbs：Each strand contains E26 based hanging sockets, provided with shatterproof LED bulbs. The distance between bulbs is approximately 3.11FT. Ideal Outdoor Lighting with Italian Bistro Style.Weatherproof and Heavy-duty: These market lights are designed to withstand the wear and tear of year-round outdoor use. They are ETL listed weatherproof commercial. The insulation material can protect the strand from hot winter, sun, wind, rain, snow and damp. Flexible heavy-duty cord withstands the wear of indoor and outdoor use.Dimmer Compatible to Set The Right Mood: For greater mood lighting flexibility and a soft glow, a dimmer switch(NOT Include) to create the perfect atmosphere for a birthday party, family reunion , or wedding reception. It adds flair to bistro deck porch patio garden backyard terrace pergola café restaurant malls for wedding BBQ party banquets, also suitable for tree-lighting like Christmas tree.Be Attention：Please make sure the bulb is tightened before hanging the string lights and then try to connect the power for a light-up test. If the whole string or individual bulbs do not light up, please try to rotate the bulbs 1-2 extra turns. (We design the connection of the light head and socket needs to be very tight for better waterproof)Satisfaction Guaranteed: If you have unsatisfactorily with your purchase for any reason, please contact us. Customer satisfaction is our highest pursuit. Product Description The outdoor string lights does not work when plug in. First please try to extra 1-2 turns even if the bulbs have been tightened. Then try to change the fuse and there is a spare fuse at the plug. Or you can try to use another power plug. If still does not work, please contact service support for help. Individual bulbs are not work. First please try to extra 1-2 turns even if the bulbs have been tightened. Second, install a good bulb on the socket that cannot light to check whether it is a bulb problem or a socket problem. If still doesn't work, please contact service support. The fuse is burned out. Please try to change the fuse and there is a spare fuse at the plug. How to adjust the brightness of your outdoor string lights? Our outdoor lights support dimmable functionbut but it is without dimmer switch actually. If you want to adjust the brightness, you should have a dimmer switch. ( Asin attachment :B09SL5DCZM) Track Page Views WithAuctiva's Counter