Includes multi light transformer, photo cell and timer. Enhance beauty of any water garden. Photo cell and timer activates when it gets dark. Low voltage transformer. Adjustable timer for settings of auto, 4, 6, or 8 hours which work with the photo cell. Transformer: Up to four lights or 100 watts only. Lights for underwater use only. Made from plastic. 7 in. L x 4 in. W x 4 in. H (5 lbs.) For all ponds and indoor-outdoor garden applications or with other items. Can be used with 20 watt and 50 watt alpine pondlites or any other garden products, which needs transformers. Do not exceed 100 watts in any combination.