After my ceiling lights began to flicker with a transformer 5, I treated myself to 4 sebson. Lo and behold, Hours of lamps with up to 7X4Watt and each lead to the spot with more than 2m are not a problem. In the stairwell I have 7 Recessed Led parallel succession. From the switch to the last Led is about 7m. Since flickers nothing. That is why I again bought 4 more for my other ceiling Spot's. They are absolutely worth the money.