A low voltage spot light for use as substitute for a mains voltage PAR38 reflector lamp which comprises a chamber for LED clusters with reflectors and an enclosure for an electronic power supply to step down the incoming mains voltage. The LED clusters are mounted in the central area of the heat sink within the chamber and are accessible via a removable window. The LED chamber is weatherproof ventilated to prevent condensation. The spotlight is designed for outdoor use in conjunction with the PAR38 style weather proof lamp holder but can be operated indoors from any standard E 27 lamp holder.