LCD display Digital Pitch Gauge for FBL Helis 250-700 size W/gyro Sensor 1. LCD display with backlight, detachable split design 2. Screen auto-reverse function. 3. Automatically detect the horizontal angle. 4. Delay angle to zero and lock function. 5. Detect the angle range of 60  6.For 250-800mm main rotor. 7:Built-in power saving function, the power is off in 3 minute without using