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The optical OLT switches use solid state technology with no moving parts to measure accurately and reliably the presence or absence of liquid in tanks, reservoirs and pipes. The product range includes basic devices with analog phototransistor outputs, switches with microprocessor compatible TTL signals, or high power devices with transistor outputs for switching currents up to 500 mA. With their miniature threaded housings the OLT sensors are easy to install and consume little space. Additionally, Sensortechnics can easily modify or customise these products to fit special customer requirements.
Important features of the new OLT series are:

