Compatible with all major FPV receivers from vendors such as for Fatshark, for ImmersionRC, etc. Supports the standard 40-channel set: band A, B, E, Fatshark, and Raceband. SmartAudio input allows remote control by the flight controller. Change channel, transmit power, and more from Betaflight OSD, flight controller USB port, Taranis Lua Script, and more. All parameters are controllable via push-button on the side of the unit, for cases where SmartAudio is not used. MMCX connector is durable and easy to use. Rated for 100's of mating cycles. Easy and quick antenna changes. No more ripped-off UFL connectors. LED indicators for channel, band, and power. Allows easy check of vTX parameters simply by glancing at the quad. Variable transmit power from 25 mW to 800 mW. Use 25 mW for a race and then easily switch to 800 mW for freestyle. 0.5 mW True Pit Mode allows you to power up safely without the risk of knocking other pilots out of the air. Built in microphone, so you can listen to your motors while you fly, no matter how far away you fly. Standard 26mm form factor allows you to mount the Atlatl directly on your flight controller stack. Output Power: 0.5 mW (pit mode), 25 mW, 200 mW, 500 mW, 800 mW Audio: 6.5 MHz Mono Antenna Connector: MMCX Input Voltage: 7 to 28 volts (2-6S LiPo) Dimensions: 30x26x7mm Mounting Holes: Standard 20mm square to center of holes Color:As Shown Material:PCB Package Contents: 1 * VTx Board 1 * 80mm SMA-MMCX Cable 1 * 60mm Antenna 1 * 150mm 4pin JST GH wire 4 * M2 Anti-Vibration Silicone Grommet Insert