TT Electronics’ New Non-Contact Reflective Object Sensor Delivers Reliable and Consistent Sensing Performance to Industrial Automation Applications. This reflective sensor features hermetically sealed components offering designers a wide operating temperature range of -55°C to 100°C to suit almost any factory setting. Designed to produce extremely low cross talk or noise signal, this product provides users reliable and consistent performance in even the most challenging applications. Designers can choose between phototransistor or photodarlington output to meet specific needs or parameters; in either option, the detector responds to radiation from the IRED only when a reflective object passes within its field of view.