The RFM02-433S1 with Module RF, FM transmitter, FSK, 433.92MHz, SPI, 2.2÷5.4VDC, 8dBm is a transmitter module manufactured by Hope Microelectronics. This module is designed to be incorporated into an electronic system or device, and is capable of transmitting data wirelessly via radio frequency. It operates at a frequency of 433.92MHz, and is powered by an external voltage of 2.2 to 5.4VDC. The RFM02-433S1 also features an integrated SPI interface, as well as an output power of 8dBm. It is designed to be a highly compact and lightweight component that is suitable for a range of long-distance and low-power wireless communication needs.