ASTER V2 SX Expert + Quantum Trigger Rear Wired

The GATE ASTER V2 SX Expert is an electronic trigger unit (ETU) with an integrated MOSFET, designed for AEG airsoft replicas equipped with V2 gearboxes. This rear-wired version includes a Quantum Trigger and allows users to customise trigger response, control the mechanical cycle and configure multiple firing modes. The Expert firmware provides access to advanced features within the GATE ecosystem.

Features and technical specifications

• Manufacturer: GATE Electronics
• Model: ASTER V2 SX
• Firmware edition: EXPERT
• Type: Electronic Trigger Unit (ETU) with MOSFET
• Compatibility: V2 gearboxes for AEG airsoft replicas
• Wiring: Rear Wired
• Included trigger: Black Quantum Trigger
• Detection system: Electronic sensors for trigger, selector and gear cycle detection
• Trigger sensitivity: Up to 60 sensitivity levels within the first millimetre of trigger travel
• Pre-Cocking: Automatic LOW, MID and HIGH settings, with additional adjustments through GATE Control Station
• Active Brake: Adaptive, 100%, 60%, dedicated brushless motor mode and OFF; advanced settings available through GCS
• Firing modes: SEMI, AUTO, BINARY, BURST and configurable combinations
• Advanced features: ROF Control, Smart Trigger, two-stage trigger, Equalizer and Sniper Delay
• Cycle detection: Supports standard, SSG, DSG, 19-tooth and Infinite Torque-Up gear configurations
• De-Cocking: Revision 2
• Motor compatibility: Supports popular brushless motors, including configurations using batteries up to 11.1 V
• Specified spring compatibility: Up to M200
• Battery protection: Monitoring and over-discharge protection for LiPo and LiFe batteries
• Supply voltage range: 3.75–12.9 V
• Rated current: 30 A
• Current consumption: 23 mA
• Low-power mode consumption: 288 µA (approximately 0.29 mA)
• Circuit board: Reinforced 1 mm PCB with interference shielding
• Dimensions: 43.8 × 28.7 × 7.7 mm
• Weight: 23.35 g
• Operating temperature: -15 °C to +50 °C
• Maximum relative humidity: 80%
• Connectivity: Compatible with USB-Link and Blu-Link for use with GATE Control Station
• Internal reference: prm-4426

Package contents

• 1 GATE ASTER V2 SX Expert electronic trigger unit with rear wiring
• 1 black Quantum Trigger

Programming and operation

The main settings can be configured directly through the replica's trigger and selector without external devices. LED indicators and motor vibrations provide feedback when navigating settings, performing calibration and identifying diagnostic notifications.

Automatic Pre-Cocking adjusts piston positioning to provide a faster trigger response, adapting to the replica's operating conditions. Active Brake management and cycle detection allow more precise control of the mechanical system.

For advanced configuration, firmware updates, telemetry and diagnostics, the GATE Control Station application can be used on Windows, macOS, Android and iOS. Connection requires a compatible USB-Link or Blu-Link accessory, available separately.

Compatibility and construction

Compared with the previous ASTER SE generation, the SX version provides improved brushless motor compatibility and high-load operation, a thicker circuit board and more effective heat dissipation.

Installation requires a compatible V2 gearbox and appropriate electronic configuration for the mechanical setup and motor being used.

Technical warning: ASTER V2 SX does not feature reverse polarity protection. Correct battery polarity must therefore be observed when connecting the battery.