The HSDL-3201#021 is an IrDA transceiver module designed for short-range wireless data communication. It operates at a data rate of 115.2kbps and has a link range of 20cm in low power mode. The module is compact in size, measuring 7.5mm x 3.35mm x 2.8mm, making it suitable for space-constrained applications. It operates on a voltage supply of 2.7V to 3.6V and has an idle current of 100μA at 25°C. The HSDL-3201#021 is compliant with IrDA 1.2 standards and can be used in various sensor and transducer applications. It is supplied in a tape and reel package, with a standard package quantity of 2,500 pcs. Please note that this product is obsolete and may not be readily available in the market.