Description: 1. ELRS open source project, remote control 2. Maximum refresh rate of 1000 3. Two RF receiving links, true diversity receiver 4. Using temperature compensated crystal oscillator (TXCD), not afraid of high or low temperature effects, with more stable performance, even if working for a long time, it is not easy to cause loss of control. 5. built-in PA+LNA, with a maximum return power of 100mwW Counterfrequency: 1. The factory firmware version of the ELRS DUAL 2.4G diversity receiver is 3. x or higher, and the 3. x and 2. x firmware are incompatible. Therefore, before frequency matching, it is necessary to upgrade the high-frequency head firmware to 3. x or higher; The receiver is powered on and off three times continuously (with an interval of 1 second) 2. Observe the RGB light on the receiver, which changes from a rainbow gradient to an orange double flashing state after startup, indicating that the receiver has entered the frequency synchronization state 3. Use an ELRS remote control or high frequency head to synchronize with the receiver. Once the RGB light on the receiver changes from dual flashing to constant on, the synchronization is successful. : Chip: ESP32-P1C0-D4, SX1281 Crystal oscillator: temperature compensated crystal oscillator Working frequency band: 2.4 GHz ISM Refresh rate: 25Hz-1000Hz Working voltage: 5V Antenna interface: ipex1 Indicator light: Color RGB light power: 20dBm Due to different batches, there may be differences in product appearance and printed text, which will not affect use Material: ABS colour: As shown Package Contents: 1 x ELRS DUAL 2.4G Diversity Receiver 2 x Antenna 2 x Heat shrink tubing 4 x Silicone connecting cable 1 x Pin (4 pins) 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.