The of chip design uses two LR1121 chips, supports sub-GHz and 2.4GHz LoRa, and has dual-channel 100mW telemetry power 915M+2.4G dual-band communication. When using dual-frequency mode, two channels can communicate at 915MHz and 2.4GHz respectively, with better anti-interference performance High-performance ESP32-C3 main control chip, ELRS system has the characteristics of long remote control distance, stable connection, low latency, high refresh rate, flexible configuration, etc. 915M+2.4G dual-band antenna has good reception performance at both 915MHz and 2.4GHz. When the dual-frequency receiver switches the working frequency band, there is no need to replace the antenna, which is more convenient to use Built-in temperature compensated crystal oscillator TCXO, using TCXO temperature compensated crystal oscillator, no fear of extreme temperatures such as high and low temperatures affecting the working state. The frequency is more stable and the flight is Model: C3 900/2400 Dual Band 100mW Gemini RX Name: ExpressLRS Receiver Chip: ESP32-C3FH4+LR1121*2+TCXO Frequency: 915MHz, 2.4GHz Backhaul power: 2*100mw Input voltage: 3.6V-5.5V 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 * Rx Receiver 1 * Connecting Cable 2 * T-Shaped Dual-Band Antennas(The color is random, and the designation is not accepted) 2 * parent Heat Shrink Tubes 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.