Precision Infrared Calibrator SANSEL Precision Infrared Calibrator Unlike Heat only devices, This model uses a solid state Heat & cool Technology, so that this can be generate both Heat and Cool. This having benefits to maintain the block temperature in different ambient temperature. BCAL 40 using True colour 3.5” Touch screen display, easy to read multi parameter at the same time like Block temperature, Set temperature, Control status, Output % level, range of the equipment, displays both °C & °F and two Touch screen soft keys are used for settings and one more advantage of help menu to guide the operating Instruction of the equipment. Hence no need of hard copy of Instruction manual.