This product is a Dehn 951305 DEHNventil Kombiableiter Typ1+2 75kA DV M TNC 255 FM 951 305, brand new and still in its original packaging. It is a type of electrical outlet and switch part that is designed to protect against electrical surges and transients. The product is manufactured by Dehn, a trusted name in the electrical supplies industry, and is designed for use in home and commercial settings.