My impression after two days:
# The contact is very well done but not for households with young children. The racket is equipped with crossbars at which every second "string" with + or - is contacted. This may result in households of children to unwanted electric shocks. I believe that these are not life threatening, but twirl tidy.
# Due to the successful contact can not the ground grid, as with conventional fly swatters common fly damage.
# By measuring differential probe means I was able to measure a voltage of 3000V between "string". That's what I call a house number! My old one had "only" 1250V between the "strings" on both sides and the ground grid.
# The Swat makes on the other hand a lot of fun fly killers nieces. Destroy is also really the right word, because conventional models the flies are most only stunned or a little shocked. The model Röhrich there is a blue flash with then dead fly. Whether this happens with bees or wasps, I can not judge. Houseflies and mosquitoes are roasted or burst at the first blow.
# Mir is only the question about the durability of the electrical components. With frequent almost short circuits which are coupled to the high voltage generated by the flies, the components will be a heavy burden depending on the design.
Personally, I would recommend anyone this swatter.