Open Source Technology: Fully compatible with open-source software, allowing for customizable updates and modifications High Refresh Rate: Ensures smooth and responsive control, enhancing your FPV flying experience Compact and : Subminiature design makes it perfect for FPV freestyle drones, minimizing the impact on flight dynamics Long-Range Capabilities: Designed for extended range, providing reliable connection over long distances, ideal for adventurous FPV pilots Compatibility: Works seamlessly with FPV setups, supporting a wide range of drones and controllers MCU: ESP8285 Antenna interface: 1 Return power: Maximum 50mW Radio frequency range: 915MHz/868MHz Maximum reception refresh rate: 500Hz/F1000Hz Minimum reception refresh rate: 25Hz Operating voltage: 4.5-6V Weight: 0.48g (without antenna) Bus interface: CRSF (Betaflight) Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: As shown Material: PCB Package Contents: 1 set * ESP Receiver 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.