For mounting using threaded section. Thermo Socket PRO is completely wired and ready for use. There are no electrical installations necessary. Special mounting accessories and a connector allow the terrarium installation without the need to take the lampholder apart. The Thermo Socket PRO is also excellent for use with the Lucky Reptile Bright Sun UV lamps as its connector is compatible to the Bright Control ballasts which can simply be attached between lampholder and wall socket. The power lead has a silicon insulation allowing the use of lamps up to 300W including the Osram Vitalux. Of course the Thermo Socket PRO is also compatible to the Lucky Reptile Reflector Sets. The Plug and Play solution!