The new TS range of Opto-Photo Interrupters can be supplied in five body styles designed for printed circuit board mounting. The sensors have an in-built opto-sensing circuit, which is designed to sense when the circuit is interrupted by the presence of any material positioned in the housing's slot between the sensor's emitter and collector. A L.E.D. gives clear indication of switching mode. The sensors can be operated from a low voltage supply exceeding 1.0Vmin and are designed to use minimal current.