Perun Lightning ETU for Version 2 Airsoft AEG Gearboxes
(Model: Rear-Wired)

Features

• Ultra compact ETU designed for Version 2 gearboxes
• Programmable firing modes
• Active Braking for perfect shot management
• Precocking function for improved trigger response
• 2-stage trigger allows for extra tuning of the trigger functionality
• Binary trigger for faster semi-auto rate of fire
• Rate of fire reduction mode for increased realism
• Low battery voltage alarm helps protect your lithium battery packs
• Built-in diagnostic system helps monitor the rifle and ETU for easier troubleshooting
• Electronic fuse cuts off the battery circuit in case of malfunction, protecting the ETU and your rifle

Perun V2 Lightning replaces the mechanical contacts in your airsoft replica or gel blaster and introduces a wide range of useful features. Optical and magnetic sensors eliminate moving parts entirely, providing exceptional reliability and flexibilityworking with almost any combination of gearbox shells, triggers, selector plates, and sector gears. Adaptive trigger control lets you adjust from a very short to a long trigger travel, even in the field, using almost any trigger, including stock ones.

Works without modification in most V2 gearboxes in Tokyo Marui standard. Compatible with both brushed and brushless (BLDC) motors. Designed to work with Perun™s full range of V2 trigger accessories: Clicker V2, Clicker V2 PRO, and Speeder V2, making it the foundation of a fully custom trigger setup. For details and exceptions please refer to the manual.
Adjustable Trigger Sensitivity: Perun V2 Lightning offers the highest out-of-the-box trigger sensitivity of any Perun product to date. No modification to the trigger or gearbox is neededthe sensitivity can be adjusted at any time, even in the field, to suit your preference and play style.

Active Brake: Active brake stops the motor after each shot, preventing the spring from remaining compressed and eliminating overspin (double-shot problem) in high-ROF replicas. Braking strength is adjustable, and the brake can also be turned off entirely. Active brake and precocking settings are independent of each other.

Pre-cocking: With precocking enabled, the piston stays in the rear position after each shot with the spring already compressed, so the next shot fires the instant you pull the triggera critical advantage in CQB situations. Precocking strength is adjustable and automatically adapts to the current battery voltage, so the piston always lands in the right spot regardless of your battery™s state of charge. Active brake and precocking settings are independent of each other. To release the spring safely after using precocking, switch to semi, fire one shot, and hold the trigger: a second shot with maximum active brake will fire after 3 seconds, leaving the spring uncompressed.

2-Stage Trigger: Light trigger pull fires in one mode; a deeper pull switches to another. Available combinations are semi-burst, semi-auto, and burst-auto.

Brushless Motor Support: Compatible with both traditional brushed and brushless (BLDC) motors.

Selectable Firing Modes: Program each selector position (SEMI and AUTO) however you like; safe, semi, burst, auto, or binary. The two positions are configured entirely independently, so you can have, for example, semi on SEMI and binary trigger on AUTO.

Binary Trigger: Shots are fired both when the trigger is pulled and when it is released, enabling easy rapid pairs in semi-automatic. Hold the trigger for 2 seconds to cancel the release shot if needed.

DMR Mode: Restricts the replica to semi-automatic fire and enforces a minimum interval between shots. Designed for fields with DMR rules.

Rate of Fire Reduction: Lowers the rate of automatic fire. Semi-automatic shots and the first shot in a burst are always fired at full power for a crisp trigger response. Useful for conserving ammo or achieving a more realistic cadence.

Programming:
All settings are configured by quick, easily memorized sequences of selector switching and trigger pulls, guided by sound signals and a multicolor LED. No tools or apps required. Settings for SEMI and AUTO are independent and can be changed in seconds, even in the field.

Safety:
Low Battery Voltage Alarm: Alerts you with repeated sound signals when the battery voltage drops to a level at which it should no longer be used. The unit automatically detects the number of cells and sets the threshold accordingly. Can be disabled for non-Li-Po/Li-Ion batteries.

Diagnostic System: Continuously monitors the replica and the unit itself. If a problem occurswhether a blocked motor, overheating, short circuit, or sensor faultthe LED signals the specific issue immediately, making troubleshooting fast and straightforward.

Electronic Resettable Fuse: Automatically cuts power in the event of a short circuit or gearbox jam, protecting both the replica and the battery. Resets when the battery is reconnected and the fault is resolvedno part replacement needed.

Compatibility and Installation
Perun V2 Lightning comes with a proprietary selector plate that fits most AR-type replicas straight out of the box. For replicas with non-standard selector plates, the package includes a special magnet with double-sided tape and a positioning tool, making installation straightforward without the need for permanent modifications.

The selector can be easily calibrated after installation to ensure precise position detection. The selector sensor uses a magnetic Hall-effect design and is completely unaffected by ambient light, so it works without any issues in replicas with cut-out receivers. Works without modification in most V2 gearboxes in Tokyo Marui standard. Compatible with brushed and brushless motors, all gearsets including DSG, and batteries from 7 V to 17 V. For the full compatibility list and exceptions, please refer to the manual.

Manufacturer: Perun Airsoft

View official Evike.com article here!