Ace 8072 TG6000 Heading Lock Gyro with Remote Gain Heading lock mode and normal mode with remote-controlled gain Analog/digital servo compatible Simple wire connection for easy installation Small and light weight FEATURES: Heading hold and normal mode Remote-controlled gain Analog/digital servo compatible Delay function Simple wire connection for easy installation INCLUDES: TG-6000 Gyro Mini plastic Screwdriver (for adjustment) Double-sided Foam Instruction Manual REQUIRES: Installation in heli in a vertical position with the wires parallel