Features: TBS CROSSFIRE NANOPRO Receiver: This product is a high-performances receiver that uses TBS Crossfire technology and has excellent remote control signal transmission and reception capabilities, enabling remote wireless control of drones. 500mW power: Equipped with a power output of up to 500mW, it provides powerful signal penetration capability and longer communication distance, enhancing the reliability and stability of remote control operations. 915/868MHz 50KM Remote Radio System: Supports 915MHz and 868MHz frequency bands, allowing users to perform remote wireless remote control operations over a wide ranges, with a communication distance of up to 50 kilometers. Excellent signal transmission quality: By using TBS Crossfire technology, stable, low latency, and reliable remote control signal transmission is ensured, effectively reducing the risk of interference and packet loss. Remote communication capability: With a power output of up to 500mW and support in the 915MHz and 868MHz frequency bands, it provides wireless communication capabilities for longer distances and expands the ranges of remote control operations. Compact and Portable: Nanoed size design, compact and lightweight, easy to install and carry, suitable for various sizes of drones. Specifications: Material: Printed Circuit Board Size: Approx. 18x11mm/0.71x0.43inch Requirement: Firmware Version6.14 Input Power: 3.3V to 8.4V Output Power: Up to 500mW Package Includes: 1x TBS Crossfire NanoPro Receiver 1x TBS ImmortalT Antenna 1x Spare Shrink Tubing 6x 30awg silicone connecting wire (2 black, 2 red, 1 white, 1 yellow) 1x Pin Header 1x4TBS note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.