... Features:High price-effective, reliability with industry standards;Built-in over voltage, over current, and short circuit protection;CE ... 500V/5mA, 60s;In-ground: 1,500V/5mA, 60sOut-ground: 500V/5mA, 60s;Insulated resistance:In-out:≥ 50m ohms, 500V DC;In-ground: ≥ 50m ohms ... , 500V DC;Out-ground: ≥50m ...