The FOTEMPTrafo is a fiber optic temperature monitoring system which has an 8 channel thermometer. It is ideal for monitoring temperatures of hot spots in transformers.Being compact and height-adjustable DIN-rail-clip provides an easy installation in the cabinet It is a multi-channel device which also has the TSTrafo temperature probe enabling it to produce accurate and precise measurements of Trafo windings. Direct installation of the sensors in the windings real makes quick and current monitoring possible. The system uses gallium arsenide so no re-calibration is required throughout the product's lifetime. It has a wide selection of interfaces making communication easy; a fast measuring speed of 250 ms per channel allows direct detection of loverloads.