ISM: ISM2400 MCU: ESP32 (master), ESP8285 (auxiliary, such as ESPBackpack) chip: SX1281IMLTRT JR standard 5-pin socket Frequency range: 2400 MHz to 2500 MHz Maximum receiver refresh rate: 500 Hz Minimum receiver refresh rate: 25 Hz output power: 30 dBm Power supply operating voltage: 5V to 10V Weight: 51 grams (without antenna) Dimensions: 70mm x 49mm x 32.5mm Antenna gain: 4.18 dBi Program target: HappyModel_ES24TX_Pro_Series_2400_TX The program can be updated directly via USB or Wi-Fi. The firmware must be in the ExpressLRS Configurator. The RGB LED functionality be improved in the ExpressLRS 2.0 version. Currently, the RGB LED is illuminated by changing the packet refresh rate. ES24TX Pro Micro-TX Tuner x1 Moxon 2.4GHz Antenna x1 Note: The tuner housing may have minor scratches, but these not affect performance. Color: As Shown Material: Plastic+Rubber Package Contents: 1 * high-frequency transmitter module 1 * 2.4GHz antenna 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.