There's no amp, no control box - just a tiny, ten gram square that's 6 grams lighter than any heading hold gyro around. It blends the superior tail-holding power of AVCS design with new sensors so sensitive that response is effectively instantaneous. And for fine-tuning, there are seven programmable features and three ways to set them.

The GY520 Gyro. The new state-of-the-art in gyro technology - and the newest member of the best-selling GY Gyro series.

• Ultra small and light weight gyro contained in one unit-no separate sensor and control unit.
• Utilizes a high speed advanced PID (Proportional-Integral-Derivative) control algorithm.
• Latest MEMS (Micro-Electro-Mechanical Systems) allows complete control system on one chip.
• Compatible with digital and analog servos.
• F3C and 3D mode selectable.
• Operates at very high speed; 280Hz in the 1250uS mode and 506Hz in the 760uS mode.
• Programmable through single button and multi-color LED or through a PC using Futaba CIU-2 USB adapter.
• Registered AVCS (Angular Velocity Control System) architecture achieves unmatched tail holding ability.

SPECS:   
Size: 0.79 x 0.79 x 0.39" (20 x 20 x 10mm)
Weight: 0.35oz (10g)