The OCB350L125Z is a full liquid sensing solution designed for clear tubes with an outside diameter of 1/8 inch . This assembly consists of an OPB350L125 sensor mounted on an OCB100AZ calibration circuit board and includes an OCB-100-MC24 interface cable. The system features automatic calibration and a preset trip level, simplifying design efforts by requiring only a power supply. The opaque plastic housing enhances ambient light rejection, and the internal phototransistor load resistance is selectable between ~2.5 kΩ, ~9.6 kΩ, or ~27 kΩ. This sensor is ideal for non-contact fluid sensing applications such as IV fluid monitoring, oil and petroleum product detection, and water systems.