ASTER II Bluetooth® EXPERT is a premium ETU/MOSFET upgrade made specifically for G&G G2H gearboxes, replacing trigger contacts and bringing advanced control, diagnostics, and tuning to your replica. With built-in Bluetooth® 5.2 and the included Adjustable Quantum Trigger 2, you can fine-tune trigger travel and sensitivity straight from the GCS app—no extra dongles needed.
Key benefits
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Adjustable Quantum Trigger 2 included – set trigger travel via screw + fine-tune sensitivity in the app
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Built-in Bluetooth® 5.2 – connect directly to GCS app (iOS/Android/Windows/macOS) for live tuning and updates
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Hair-trigger tuning – very wide sensitivity range, plus adjustable trigger reset (hysteresis)
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Pre-cocking (Auto/Manual) + De-cocking – faster response and proper spring release after games
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Active Brake & ROF control – adaptive braking and configurable rate-of-fire reduction/targeting
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Advanced fire-mode programming – extensive selector combinations including SEMI, BURST, BINARY, AUTO and ramping options
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Telemetry & diagnostics – BB counters, electrical measurements, warnings/errors with descriptions for troubleshooting
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Magazine simulation features – capacity + “reload time” simulation for realism with MID-CAP/LOW-CAP play
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Programmable I/O port – supports external sensors like bolt-catch or magazine sensors (compatible accessories)
HPA compatibility (single-solenoid)
ASTER II Bluetooth® supports single-solenoid HPA engines, but to connect you’ll need the dedicated connector cable (not included). Examples of compatible engines include: PolarStar JACK, Wolverine INFERNO Gen 2 / REAPER, Redline N7, and GATE PULSAR S.
Technical specs
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Supply voltage (AEG): 3.75–12.9 V
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Supply voltage (HPA): 5–8.6 V
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Current consumption: 20 mA (low power mode 130 µA)
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Dimensions: 43.8 × 28.7 × 5.5 mm
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Weight: 23.4 g
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Operating temperature: -15°C to +50°C
Compatibility note: This version is for G&G G2H gearboxes. Verify your replica’s gearbox platform before ordering.
