The GATE NanoHard Multifunction Programmable AEG Controller has 8 functions and is resistant to atmospheric conditions (Military Specification MIL-V-173C). Battery protection supports: Li-Po 7.4V / 11.1V / 14.8V. Not that one would ever consider using 14.8V batteries, but you can with this.
This is the first controller that provides you with the possibility to turn off the Active Brake. You can enable or disable the Active Brake at any time. If there is ever a possibility of your rifle becomes jamming, it will protect the motor and battery against any damage. There is no possible way to destroy the controller by overheating, overloading or short-circuiting of the electrical system.
It allows you to quickly check whether the AEG Controller works properly. If you have a problem with your AEG, the BUILT-IN SELF-TEST will let you know if the controller is at fault.
It sends the energy from the battery straight to the motor, bypassing the mechanical trigger contacts resulting in a higher rate of fire as well as a quicker trigger response.
User Guide: http://www.redwolfairsoft.com/redwolf/product/nanohard_en_rev3.pdf
Here's a link to its manual which is available in English, Spanish, French, Italian and Polish:
https://www.gatee.eu/manuals
Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.