The Kestrel V2 BASIC is a low-budget option that allows you to upgrade your AEG with reliable ETU. Set your wanted pre-cocking level, different SEMI & AUTO functions with simple programming steps.Features: Easy Programming: Only 3 steps to finished your wanted setting, reset all functions with 8 seconds trigger hold. Pre-cocking Adjustment: Different 5 pre-cocking levels to programming. The KESTREL Basic have learning function which can automatically determine the position of pre-cocking stop based on different speeds and loads. It is normal for a single shot to fire a few more rounds after replug or unplug the battery. Support Brushless Motor: Support brushless and high-speed/high-torque motors. Long Lasting Shooting: Perfectly working even over 50k shots. Active Braking: Adaptive function to avoid gear instability, ensure piston stops in front position, increase gearbox and inside parts' service life. Locked Rotor Protection: Active protection when gear and motor work out of order prevents gearbox damage. Low Battery Protection: When the battery is low, motor vibrates 5 times and blue light flashes 5 times at the same time. Low/High Voltage Protection: It can self-judge the number of lithium battery cells. 2-cell battery supports a minimum of 6V, and 3-cell battery supports a minimum of 8.5V. Maximum support 17V. Strong compatibility: supports most V2-type gearboxes on the market.