dolphin authentic replacement parts - power supply switch dyn+timer, maytronics part number: 9995678-us-assy dolphin replacement power supply works with the following dolphin robotic pool cleaners: edge, deluxe 4/5, wave 50/75, m4/m5, apollo/apollo plus, discovery, prowler 830, dx4/dx6, dx4+s, dx5+s, neptune plus, heavy duty,triton plus, premier, bio, m400/500. black power supply cord is not included.