BAYCKRC UR100 Dual Band RX Model:BAYCKRC UR100 Dual Band RX RF Freq:868Mhz/900Mhz/2.4Ghz IC:LR1121+ESP32-C3+TCXO TX Power:100mw@868Mhz/900Mhz/2.4Ghz Color:Blue USB upgrade port: Supported Input Power:3.6-5.5V Weight:1.2g(receiver only) Size:17mm*22mm Firmware:BAYCKRC UR100 Dual Band RX