It is a of remote control wireless system developed based on the open source project ExpressLRS. The ELRS system has the characteristics of long remote control distance, stable connection, low latency, high refresh rate, flexible configuration, etc High-performance main control chip, using ESP8285 main control, higher computing power Temperature compensated crystal oscillator, using TCXO temperature compensated crystal oscillator, no fear of extreme temperatures such as high temperature and low temperature affecting the working state. The frequency is more stable and the flight is The clock is more synchronized, using two channels to share a crystal oscillator, providing a more synchronized and stable clock It has the advantage of stronger diffraction ability, can maintain better stability in an environment with dense obstacles, and is more suitable for long-distance navigation Model: ELRS 915MHz NANO RX Name: ExpressLRS Receiver Frequency: 915MHz Return power: 50mw Input voltage: 4V-5V Antenna connector: IPEX1 The product appearance and printed words depending on the batch, but this does not affect use. Colour:Black Material:PCB Package Contents: 1 * ELRS 915mhz Nano Rx Receiver 1 * Connecting Cable 1 * 915mhz Dipole T-Antenna(The color is random, and the designation is not accepted) 2 * Heat Shrink Tubing 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.