Features: With external LED module Providing automatic and manual mode Providing multi sound buzzer interface Providing redundant power supply input and failover Abundant connectivity options for additional peripherals (GPS, I2C, SPI) Pixhawk flight controller, NEO-M8N GPS, OSD, 915Mhz radio telemetry transmision Advanced 32 bit ARM CortexM4 high performance processor, can operate NuttX RTOX 14 PWM/servo outputs (8 with failsafe and manual override, 6 auxiliary, high-power compatible) Intergrated back up power and lose efficacy controller, main controller lose efficacy can safely alter to back up control