TSOP2138LL1 PHOTO TRANSISTOR TSOP2138LL1 is a high-performance infrared receiver designed for optimal signal detection at a frequency of 38kHz. It offers a detection range of up to 35m and operates within a supply voltage range of N/A. With a supply current of 1.1mA, it ensures efficient energy use. Suitable for temperatures ranging from -25°C~+85°C, this product complies with ROHS standards and is provided in TUBE packaging.