The SI1005-C-GM is an RF Transceiver IC with a TxRx + MCU type. It comes with a 32kB Flash and 4.35kB RAM memory size, and operates on a frequency range of 240MHz to 960MHz. The SI1005-C-GM is designed to work with the EZRadioPro protocol and offers a data rate of up to 256kbps. It has a sensitivity of -121dBm and a power output of 13dBm. The RF Family/Standard for this IC is General ISM < 1GHz. It supports FSK, GFSK, and OOK modulations, and has serial interfaces such as I2C, SPI, and UART. The GPIO count for the SI1005-C-GM is 19, and it requires a voltage supply of 1.8V to 3.6V. This IC comes in a 42-WFQFN Exposed Pad package and is suitable for SMD (SMT) mounting. It has an operating temperature range of -40°C to 85°C.