These receivers are ultra-light and ultra-small in size, making them easy to carry Adopts IPEX1 first-generation antenna base and external T-shaped antenna Great for FPV matches and long distances The Nano receiver (2.4G version) is a receiver with a power amplifier (PA+LNA). It has 100mW telemetry output and better sensitivity at longer distances Excellent material, not easy to damage Name: Nano 2400 RX Firmware: 2400 Nano Antenna interface: 1 Operating voltage: 4-5.5V Minimum refresh rate: 25HZ Maximum refresh rate: 500HZ Type: ISM Operating protocol: CRSF (The product appearance and printed words depending on the batch, but this does not affect use) Colour: As Shown Material: PCB+Plastic Package Contents: 9 x Receiver Module 9 x Antenna 9 x Connection Cable 18 x Casings 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.