HC-11 CC1101 433MHz Wireless Transceiver RF Serial UART Module Quadcopter DIY Drone Combo Kit for Beginner whereas the RB variant provides

whereas the RB variant provides more Flash for complex applications and additional GPIO pins for expanded peripheral connections

Manual time adjustment knob with 24-hour dial markings enables field programming without specialized test equipment or external calibration devices

This PLA offers good light transmission with a beautiful purple hue

High Brightness Output: 3000-4000 nits luminosity ensures crystal-clear visibility in direct sunlight and high ambient light conditions

The 240MHz dual-core processor and 520KB SRAM are sufficient for basic face detection and recognition with pre-trained models

HC-11 CC1101 433MHz Wireless Transceiver RF Serial UART Module Quadcopter DIY Drone Combo Kit for Beginner whereas the RB variant providesHC 11 CC1101 433MHz Wireless Transceiver RF Serial UART Module