Gearbox Set APS V2 SDU 2.0 eSilver Edge Rear Wire QD AEG M 4 Airsoft

SDU2.0 is a programmable ECU chips that is being used in eSilver Edge Gear Box Simply pressing down the button underneath of the gear box, user can switch its fire selector modes (total 5 different modes). No external device or trigger control are needs, it is easy to program anytime and anywhere by the user. First, connect your AEG with a fully charged battery (7.2 ~ 11.1v) Battery. The usaual battery that you used when your play Airsoft. Second, find the switch button. The button is located underneath of the gear box reachable from the magwell of the lower receiver. How to change the mode? Step 1) Press and hold the button. You will see a Red LED light on, hold till you see its blinking 2 times, release the button to accept the changes. Repeat Step 1 to continue your choice. Choice of Firing Mode: Mode 1 (Default) Safe Semi Auto Mode 2 Safe Semi Three Burst Mode 3 Safe Two Burst Auto Mode 4 Safe Three Burst Auto Mode 5 Safe Three Burst Nine Burst **Double click the button or unplug the battery anytime to reset the ECU back to its factory settings (Mode 1) ** Outstanding GearBox Specification: Use of Advanced S.D.U. chips Micro Switch Trigger Reinforced parts Ambidextrous design AEG / EBB Compatible Key Features of eSilver Edge Gear Box: 1) Quick Change Spring System 2) Polished and Buffed surface improves smoothness 3) 8mm Bearing Bushings, Bearing Piston Head and Bearing Spring Guide used 4) 100% TM Compatible Parts 5) Prevent Corrosion 6) Mirco Trigger Switch for instant trigger response 7) The Quick Change Spring Guide has 4 locking legs instead of 2 which is different from the existing spring guide found in the market which further secure the spring while shooting 8) Build in MOSFET to cut the power when Ampere is too high.