The SM220UF1-XSBT is a radio frequency (RF) module that is designed for use in wireless applications. It’s a small module that combines a power amplifier, an antenna, and a serial interface in one package, allowing for the easy installation of wireless connectivity. It features a 220-240 MHz frequency range, an adjustable output power of up to 2W, and a TX/RX sensitivity of -118 dBm. It also supports IOS, Android, Zigbee, BLE, and other protocols, as well as integration with other systems. It’s also FCC and CE certified.