Receiver FPV Long Range Racing Drone Receiver 1. Chip: ESP8285+SX1281 2. Crystal: Epson Crystal 3. Frequency band: 2.4GHZ 4. Antenna: T-type antenna 5. Antenna connector: IPEX-MHF 6. RF power: 100mW 7. Refresh rate: 50HZ-F1000HZ 8. Input voltage: DC5V 9. Firmware version: ExpressLRS V3.3 10. Firmware upgrade: support WIFI upgrade firmware 11. Size: about 18.9 x 11.2 x 1mm 12. PCBA weight: about 0.8g Features: 1. Immersion gold layer of high conductivity, lower resistance, faster signal transmission, more accurate flight control response, oxidation and corrosion resistance, to enhance the overall stability of the electrical connection 2. Epson crystal high-precision frequency stabilization technology, low-power, long-life design, industrial-grade reliability, widely adapted to smart devices and communication systems 3. 100mW power output on the transmitter side, 250Hz refresh rate, no-obstruction environment control distance of about 3,000 meters, long-distance flight is more secure 4. Mini size design, easy to hide in the compact traverser or model, does not take up valuable space, effectively reduce the weight of the whole aircraft, improve flight efficiency and maneuverability 5. High hardness and pressure-resistant plastic storage box, dustproof and moisture-proof Packing list: - Receiver x 1 - T-antenna x 1 - Spare shrink tube x 1 - 28AWG silicone wiring (1 black 1 red 1 white 1 yellow) x 2 - Instruction manual x 1 - Storage box x 1