CC1101 is a high-performance wireless communication module. It uses E07-900M10S module solution (built-in CC1101 low-power Sub-1 GHz RF transceiver), operates in the 855~925MHz frequency band, and supports 2-FSK, 4-FSK, GFSK, MSK, ASK, and OOK modulation schemes, providing stable wireless data transmission while maintaining low power consumption. The module uses an SPI communication interface and has onboard DIP switches for flexible switching of communication pins, supporting multiple modules stacked simultaneously for functional expansion. It is suitable for wireless control applications such as industrial automation, smart home, automated lighting and robotic equipment. SPI Serial Communication Protocol E07-900M10S Module (Based on CC1101) Built-in DIP Switch Pin Switching Multiple Units Can Be Stacked CC1101 Low-Power Sub-1 GHz RF Transceiver Independent 64-byte RX FIFO and TX FIFO Supports RSSI (Received Signal Strength Indicator) and LOI (Link Quality Indicator) Operating Frequency Band 855~925 MHz Supports 2-FSK, 4-FSK, GFSK, MSK, ASK, and OOK Modulation Modes Receiver Sensitivity: Up to -109 dBm (1.2kbps rate) Low Power Consumption in Sleep Mode External SMA Antenna Interface Development Platform: Arduino, UiFlow2 Color: Black & Gray Material: PCB+Plastic Package Contents: 1* CC1101 Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.