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ASTER II Bluetooth® EXPERT for V2 GB + Adjustable Quantum Trigger 2 [AEG & HPA]

ASTER II Bluetooth® EXPERT for V2 GB + Adjustable Quantum Trigger 2 [AEG & HPA]

Regular price USD 86.70
Regular price USD 108.37 Sale price USD 86.70
Sale Sold out
Shipping calculated at checkout.

The unit is compatible with single solenoid engines. To connect, the Cable with connector for single solenoid HPA engine for TITAN II Bluetooth® [AEG wiring] & ASTER II Bluetooth® is required (not included in the set).


ASTER II Bluetooth® is compatible with:

  • Wolverine INFERNO Gen 2
  • Wolverine REAPER
  • PolarStar JACK
  • Redline N7

Free express shipping

Free express shipping via courier on all orders over 250 USD

Shipping & Returns

Destination Express shipping via Fedex/UPS Polish National Postal Service
 Europe 2-7 business days 1-2 weeks
Asia 2-5 business days not available
US/Canada 2-3 business days not available
Australia 3-4 business days not available


*Please note that the above delivery times may be extended due to custom duty procedure.


1. The Goods purchased in the Online Store are delivered worldwide, subject to territorial restrictions under applicable laws.
2. The Goods are delivered via specialised courier companies or Poczta Polska (the Polish national postal operator). In some cases, the Goods may be personally collected from the Seller’s registered office, and in the case of the Goods that represent digital content – they may be downloaded on an appropriate device.
3. The Goods are shipped within 1 to 3 (one to three) business days from payment booking. In some cases, the Goods can be shipped at a later date. This applies also to the Goods sold in advance (pre-sale). In such a case, the Seller shall inform the Client about a shipment date. An approximate shipment delivery date depends on a delivery method selected and a destination country, and is specified at order placement. When selecting a transfer payment option, the delivery time indicated on the Website shall be increased by time needed to credit the Client’s entire payment to the Seller’s bank account, usually 1-2 (one to two) business days. Further, in the case of countries outside the European Union, due to distance and potential customs controls the delivery time may be prolonged up to 5 weeks.
4. Detailed delivery method information is available in the Online Store in a Cart section of the given Product.
5. The Goods are shipped to an address specified in an order form or provided by phone or by e-mail. The Seller shall promptly inform the Client about the fact that an order form has been filled in incorrectly if this prevents or delays the conclusion of the Sales Agreement or the delivery of the Goods.
6. Prior to the acceptance of shipment from a postal or a courier service, packaging should be checked for any potential damage inflicted in transport. In particular, the condition of tapes or seals placed on the shipment shall be verified. If shipment package shows any signs of damage or if the seals (tapes) are removed, the shipment shall not be accepted, a damage report shall be prepared in the presence of a courier and the Seller shall be contacted as soon as possible in order to clarify the issue. If discrepancies in terms of shipment quantity or quality are not detected at the acceptance, this might adversely affect the resolution of the Client’s claims filed due to shipment damage or theft in transport.
7. In the case of the Goods that represent the firmware upgrade of devices distributed by the Seller (digital content), the Client, upon the placement of the Order, conclusion of the Sales Agreement and payment, shall connect to a GATE CONTROL STATION desktop application via a USB-Link or Blu-Link device and install the upgrade purchased.

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  • The brand new ASTER II Bluetooth® EXPERT for V2 GB is the younger brother of the well-known TITAN II Bluetooth®. Built-in Bluetooth 5.2 technology gives you direct access to ASTER II Bluetooth® settings, AEG telemetry, and the ability to use our smartwatch app, the tactical computer STATUS, and other future devices of the GATE Ecosystem. Today you can use ASTER II Bluetooth® with your AEG and tomorrow with a single solenoid HPA engine. This makes ASTER II Bluetooth®, right after TITAN II Bluetooth®, the most versatile ETU in the world replacing trigger contacts. ASTER II Bluetooth® raises the price-performance ratio by including an adjustable Quantum Trigger 2 and Bluetooth® 5.2 onboard. You get cutting-edge technologies at a reasonable price. Now, out of the box, you can set sensitivity from ludicrous touch through hair to full movement. Automatic pre-cocking, trigger sensitivity adjustment, Active Brake settings with top-class adaptive mode and the Binary Trigger are all available via Bluetooth® with the GCS app. Extended compatibility with brushless motors – ASTER II Bluetooth® is compatible with popular brushless motors even with a supply voltage of 11.1 V. ASTER's smart fuse protects your AEG’s battery, motor, and the controller. This feature, along with the optical sensors, makes ASTER II Bluetooth® one of the most durable ETUs on the market. ASTER II Bluetooth® is not just a regular ETU/EFCS mosfet. It is a complex system that turns your AEG into future-proof advanced training equipment with built-in Bluetooth®. ASTER II Bluetooth® has a coating in the MIL-V-173C military specification, making it resistant to weather conditions.

  • Connect your ASTER II Bluetooth® with the GCS App and get total control of your AEG. Control your airsoft replica from your iOS, Android, macOS or Windows device using a built-in Bluetooth®. You no longer dongles such as USB-Link or Blu-Link. Get real-time data from your smartwatch (with Wear OS or watchOS) to reinforce your tactical decisions and get the advantage necessary to win and even use your smartwatch as remote trigger.

    Download GCS App 
  • Extraordinary quality-to-price ratio:

    • ASTER II Bluetooth® gives you total flexibility thanks to Bluetooth® 5.2 and compatibility both with AEG and HPA. You can update your firmware and get new options, connect additional accessories, check telemetry. Now – right off the shelf. At no extra charge.
    • GCS app for iOS, Android, macOS or Windows
    • GCS app for your smartwatch (Wear OS or watchOS) – real-time data like BB counters & remote trigger!
    • compatibility both with AEG and single solenoid HPA engines
    • hair-trigger – up to 35 trigger sensitivities for the first millimeter (0.04 in) of movement & up to 680 in the full range
    • configurable trigger reset (hysteresis)
    • top-notch automatic pre-cocking
    • free internet firmware updates
    • ASTER II Bluetooth® is a part of the GATE Ecosystem
    • lowest in the market current consumption deep sleep mode with only 140 uA current consumption prevents battery discharge
    • built-in voltage boost converter means trouble-free operation with weaker batteries and increases the switching efficiency
    • 3.75 V ready – ASTER II Bluetooth® operates at very low voltage (even 1.2 V during the shot), which is important in high-tuned AEGs, where the voltage under load drops significantly
    • sensor supporting Infinite Torque-up, DSG, SSG, 19-tooth, and standard gears
    • the possibility of using a mechanical trigger lock
    • extended compatibility with brushless motors – works perfect with all popular brushless motors even with 11.1 V batteries
    • Multifunctional programmable I/O port – allows to connect bolt-catch sensor, magazine sensor, and more
  • What makes ASTER II Bluetooth® so special?

    • Everything you need out-of-the-box
    • Adjustable Quantum Trigger 2 included in the kit. Set trigger travel with screw and trigger sensitivity in the app.
    • Built-in Bluetooth® 5.2
    • Noise-resistant trigger detection algorithm
    • Hair-trigger out-of-the-box. Even 35 trigger sensitivities for the first millimeter (0.04 in) of movement & up to 680 in the full range
    • Additional protection against interferences thanks to multi-layer PCB with EMC shield
    • Automatic Pre-Cocking: 0-5
    • Trigger sensitivity adjustment without any limitation – what’s more, you can now adjust Trigger Reset (hysteresis)
    • Improved cycle detection
    • Active brake adjustment: Adaptive / 1-100%
    • 343 selector modes. All possible combination of: SAFE, SEMI, BURST, BINARY, BURST/AUTO, AUTO & SEMI RAMPING
    • The GCS app enables firmware updates via the internet, which means instant application of improvements
    • Both ASTER and ASTER II Bluetooth® are now compatible with QUANTUM TRIGGERs:
      Quantum Trigger 1 (QT: 1A1, 1B1, 1C1, 1E1)
      Quantum Trigger 2 (QT-2A1) – over-travel movement adjustable with screw

    What is an ETU?

    It is an Electronic Trigger Unit replacing trigger contacts and the cut-off lever, which takes control of your AEG.


    What is the self-learning automatic pre-cocking?‎

    • thanks to pre-cocking, you gain trigger reaction similar to real life
    • automatically sets piston position
    • easy-to-use – just set one of the 5 modes: 0-5
    • automatically adapts to the battery voltage and rate of fire
  • ASTER II Bluetooth®

    Supply Voltage Range

    3.75-12.9 V

    Current Consumption

    20 mA

    Low Power Mode

    130 µA

    Dimensions (Length x Width x Height)

    43.8 mm x 28.7 mm x 5.5 mm

    Finished Product Weight

    23.4 g

    Operating Temperature Range

    min. -15°C max. + 50°C

    Relative Humidity

    ≤ 80%


    ASTER II Bluetooth® and ASTER II Bluetooth® and GCS App gives you total control of your replica.

    With the GCS app you

    • control your airsoft replica from a smartphone with Android, iOS and PC with Windows or macOS
    • easily adjust the ASTER II Bluetooth® settings during the game
    • update your firmware – apply changes, make improvements, and get bugfixes
    • perform diagnostics and send reports
    • view the BB counters, electrical measurements, and statistics
    • get the latest news from GATE Enterprise
    • acquire real-time data from your smartwatch (with Wear OS or watchOS)
    • have no more surprises with an empty magazine or a discharged battery

    Download GCS App 

ASTER II Bluetooth®: 19 FEATURES with millions of options


Your ASTER II Bluetooth® is fully compatible with popular brushless motors even 11.1 V batteries.


Predefined number of BBs fired per series, maximum series length limit – should the trigger jam, it will stop shooting on AUTO after firing the set number of BBs.


Automatic detection of a full gear cycle for setting BURST and SERIES SAFETY LIMIT.

The ASTER II Bluetooth® sensor detects the cam of the gear instead of the teeth, making it possible to use all types of gears: Infinite Torque-up, DSG, SSG, 19-tooth and standard gears.


Elimination of unnecessary wear & increase of gearbox service life – automatic adjustment of braking power and manual configuration from 0-100% with an accuracy of 1%.


Vibrations signaling warnings & information.


Trigger sensitivity adjustment without any limitation – what’s more, you can now use Trigger Reset point (hysteresis).



Automatic spring compression for real life touch & feel – set the pre-cocking power between 0 and 5. Manually configure the pre-cocking time in MANUAL Mode.

There are two Pre–Cocking Modes:

  1. AUTO Mode – the spring is automatically compressed after each shot–you choose the level of Pre–Cocking from 0-5
  2. MANUAL Mode – set the Pre–Cocking values yourself–instead of levels there are time settings, you have to choose the time for yourself by trial and error

Please note: using Pre–Cocking increases wear and tear on the gearbox.


Release of the compressed spring in a short and simple trigger and selector sequence. De-cocking extends spring, piston and gear lifecycle. A good practice is to release the spring after every game with enabled pre-cocking.


Rate of Fire reduction for stronger battery use, automatic brake and delay settings, setting braking power in percentages, delay between shots in milliseconds or braking power & delay manually; adaptive ROF allows you to set a specific ROF and the system will adjust the settings itself to achieve the set ROF.


You don't need to fully release the trigger to fire the next shot. This option is really useful when the trigger sensitivity level is very high. Choose between

  • OFF – to fire the next shot, you need to release the trigger until it reaches the selected trigger reset point.
  • 2LVL – to fire the next shot, just release the trigger until it moves over two adjoining sensors.
  • 1LVL – to fire the next shot, just release the trigger until it moves over an adjoining sensor.


Reload or recoil simulation for a more realistic experience.


7 options in each selector position including SAFE, SEMI, BURST, BINARY, BURST/AUTO, AUTO & SEMI RAMPING

SAFE – prevents your replica from firing, even if the safety lever is removed

SEMI – fire one shot per one trigger pull

BINARY – one shot on the trigger pull and another shot upon release 

BURST – shoot a predetermined number of BBs, which is very useful in MilSims and when using low-caps; there are 2 BURST Modes available: 

  • Full – a burst is shot in full, even if the trigger is released before the preset number of BBs has been shot
  • Interruptible – the burst can be interrupted by releasing the trigger earlier – even if not all the BBs from the burst have been shot the replica stops firing once the trigger has been released

BURST/AUTO – available in Full BURST Mode only; allows for extending a burst by any number of shots – if you hold the trigger after the burst is shot, it switches to AUTO Mode 

AUTO – shots are fired as long as the trigger is pulled

SEMI RAMPING – if you pull the trigger very fast, it switches to AUTO Mode

Please note: In the case of Regional Lock, only SEMI Mode is available. Check law restrictions in your country.


Simulates magazine capacity and magazine reload. Allows you to set the magazine capacity and the time between reloads, allowing you to use a MID-CAP magazine and maintain realism by limiting the capacity, for example, to 30 shots, and setting a pause in shooting for a few seconds, simulating a magazine change.


Airsoft data at your fingertips, including: BB Counter, Motor Cycle Counter, Rate of Fire, ROF on SEMI, Trigger Response, and more.


Warnings & errors for instant troubleshooting, including detailed descriptions. Errors are communicated once they occur.


Counts the number of rounds left in the magazine, like in computer games.


Useful tool for calculations.


Real-time data & remote trigger from your smartwatch with Wear OS or watchOS.


I/O functionalities – ability to connect two input/output devices: bolt-catch sensor, magazine sensor, external trigger or other compatible I/O device.


  • configurable battery protection functionality
  • protection against overdischarge
  • automatic detection of the number of cells in the battery
  • low battery warning
  • configurable low battery voltage warning threshold

Which ETU is best for you – ASTER II or TITAN II?

  • ASTER II Bluetooth®

    Release year

    Single board

    Number of solenoid valves when used with HPA engines


    Trigger sensor

    Optical, reflective – works best with Quantum Trigger and Quantum Trigger 2

    Gear sensor

    Optical gear cam sensor – single signal per gear rotation


    50 RPS

    ROF, Trigger Response, MOSFET temperature, ROF Achieved on SEMI


    3.75-12.9 V (Batteries: 7.4 V & 11.1 V)
    Multifunctional programmable port
    I/O port for bolt-catch, magazine sensors, and more. No power supply capability for devices from the port. Soldering pads. No socket.
    Safety lever compatibility
    Infinity Torque-up gears support
    KWA 2.5 support

  • TITAN II Bluetooth®

    Release year

    Dual board
    Number of solenoid valves when used with HPA engines


    Trigger sensor

    Optical – cutting the light beam; works reliably with every trigger

    Gear sensor

    Optical advanced dual teeth sensor – patented gear sensor detects each tooth and the direction of gear movement allowing for the world’s most precise cycle control

    Max ROF

    100 RPS


    ROF, Trigger Response, MOSFET temperature, Voltage, Current, RMS power, Work, Effeciency, Battery Drain per Shot, ROF Achieved on SEMI


    3.75-17 V (Batteries: 7.4 V, 11.1 V & 14.8 V)
    Multifunctional programmable port
    Yes – I/O and power port. Bolt-Catch button, Magazine sensor, Hop-Up chamber to tracer and sensors, Dual Solenoid HPA, Electric Magazine, and more. Easy-to-use socket. No soldering required.
    Safety lever compatibility
    Infinity Torque-Up gears support
    KWA 2.5 support

    • ASTER II Bluetooth® (rear or front wired)
    • Adjustable Quantum Trigger 2 - Black Matt version
    • Chromatic ASTER II Bluetooth® sticker
    • 2x PIN code sticker
    • Installation Kit
    • QuickStart Guide
    • Doypack box for less waste

    There’s no need for a USB-Link or Blu-Link thanks to built-in Bluetooth® communication.


Browse Manuals, FAQs, and get instant help with technical issues, warranty claims, and order enquiries.


    Transform your AEG into a computerized training system and gain a unique tactical advantage thanks to extremely fast trigger response—just like in real life.


    The younger brother of the well-known TITAN. Designed to achieve maximum reliability at an attractive price and destined for most AEGs. ASTER is destined for most builds.


    Get data in real-time directly from the STATUS screen to reinforce your tactical decisions. No more surprises with an empty magazine or a discharged battery.


    GATE Control Station is a free universal app for configuring, controlling, and connecting the GATE Ecosystem elements such as the TITAN, ASTER and STATUS.


    Virtual STATUS functions in your smartphone. No more surprises with an empty magazine or battery.


    GCS App provides essential STATUS functionalities such as the BB counter, magazine counter, and the remaining shots on the battery.


    Blu-Link allows for wireless management of your GATE ETU via the GCS App. You can use an iPhone, Android smartphone or a computer to control your replica with Bluetooth® 5.0.


    The USB-Link dongle is used for connecting GATE ETUs with PC, Mac, and Android devices. Working in tandem with the GCS App gives you full access to functions and settings.

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