The UA12BLD02NPM1TR is a self-contained diffuse ultrasonic sensor featuring a single NPN switching output with programmable NO or NC modes via remote teach-in functionality. It provides a sensing range of 25 to 200 mm with an 8° beam angle and operates on 10 to 30 VDC power supply, delivering a maximum output current of 100 mA continuous. The sensor is housed in stainless steel with M12 x 79 mm dimensions, M12 4-pin connector, and achieves IP 65 protection rating with short-circuit, reverse polarity, and transient protection. Key performance characteristics include a 20 Hz operating frequency, 400 kHz carrier frequency, 10 ms response time, 0.3 mm repeatability, and temperature compensation across -20°C to +70°C operating range. This microprocessor-controlled sensor with digitally filtered electronics is ideal for level control, object detection, and distance measurement tasks in industrial automation and process control applications.