It is Flowtron BK-15D Electronic Insect Killer(Amazon), 1/2 Acre Coverage. I first ordered Flowtron BK-40D for 1 acre. It came damaged - the construction is really flimsy… The replacement came damaged as well… And by looking at it I got an idea, that smaller version should be more firm. So canceled that order and got smaller one. That was much better and worked just fine for two years. I may skip this year - no fruit to save…