The PT-A2-DC-3-BE-940 is a phototransistor made by Token. It features 3mm of length, a maximum peak wavelength of 940 nanometers, a voltage of 30 volts, a black lens, and a power consumption of 70 milliwatts. It is designed to detect electromagnetic radiation in the visible and infrared spectrums. The phototransistor is sensitive to light and can detect changes in light intensity, allowing it to function as a switch. The PT-A2-DC-3-BE-940 is suited for use in detection, switch, and control applications.