50-Foot 12/3 GFCI Ground Fault Circuit Interrupter Extension Cord Your Name Printed on Cord Class A GFCI, 4-6 mA Trip Level Power on Indication  Mechanical Indication (Red means On) Surge Suppression: 13 Joules Insulation Voltage: 1500 V RMS  1 Minute UL Listed, CSA approved. Meets OSHA requirements for GFCI extension cord protection.