Electronics System Co., LtdThe Si24R1 with RF Transceiver ICs TxRx Only General ISM > 1GHZ ARQ 2.4GHz 2Mbps 1.9V~3.6V QFN-20_4x4x05P RoHS is a radio frequency transceiver IC manufactured by the Zhongke Electronics System Co., Ltd. It is a four-layer device designed for ISM (industrial, scientific, and medical) applications operating at a frequency of more than 1 GHz, and supports two-way communication with a data rate of 2 Mbps. The Si24R1 requires a supply voltage of 1.9V to 3.6V, and is packaged in a 4x4x05P QFN-20 RoHS compliant package, making it suitable for a range of commercial and industrial applications.