We could easily connect six of them to form a chain of three. A bulb stopped working after 7 months. We swapped the bulbs from one plug to the other and found that after that short time we had a bad adapter (the 3 x 3 x 1 inch box that sits over the bulb). We are waiting for the manufacturer's response. about providing a replacement adapter block UPDATE: Interacted with Luminosum when one of the adapters failed - they sent a replacement free of charge within a few weeks Good customer service!
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