1. Dual communication link, the antennas work at different frequencies same time, with super anti-interference performance; 2. True diversity reception, integrating dual-channel SX1276 (2.4G version SX1281) and Pa/Lna, dual-antenna omni-directional stable signal; 3. Using Tcxo temperature-compensated crystal oscillator, frequency is more accurate it not afraid of high temperatures or severe cold, will lose signals during long flights; 4. Direct plug-in connection, plug play, eliminating trouble soldering enabling quick replacement while retaining pad design; 5. Elrs has characteristics long-distance remote control, low latency, up to 1000HZ refresh rate. 6. can use WiFi upgrade firmware. rate:2.4G:50hz-1000hz chip:2.4G:ESP32+2xSX1281+Tcxo Receiver dimensions (without antenna):2.4G:22mmx15.24mm return power:2.4G:100mw Antenna interface: ipex1 generation Input voltage: 3.6V-5.5V Indicator light: Color Rgb light printing may be in batches, but affect use Colour:Black Material:Pcb Package Contents: 1x antenna Only above content, other products are included. Note: Light reflection displays cause item picture a little from real thing. measurement allowed error +/- 1-3cm.