Dimensions: 10 x 20 x 35 cm - 2m cable with mains plug and 3m cable stripped as lamp lead with wire end ferrule The pearl among the digital devices, the advantage is that you eg. can start with 250 watts in the growth phase, in the 1-2 weeks of flow can switch to 400 watts and from the 3 week on super lumens to the end! Saves a lot of electricity costs, furthermore the digital devices have no strong starting currents, no more risk for "watch firing" and no noticeable start current spikes !!!