Built for performance and durability, the LDT ETU V2 Lite MOSFET delivers next-level electronic control for gel blasters — combining precision engineering, intelligent learning, and multi-layer protection in one compact system.
Intelligent Battery Protection
Automatically detects battery voltage and enters a low-power smart protection mode.
Even if you forget to unplug the battery, it won’t be damaged.
Intelligent Adaptive Learning
Automatically recognizes brushed and brushless motors as well as various gear ratios.
Adjusts braking force in real time to ensure smooth cycling and consistent performance.
Simple & Fast Programming
User-friendly operation and instant programming — supports dual-burst, multi-burst, pre-cocking time adjustment, and more advanced firing options.
Precision Craftsmanship & Premium Materials
- Double-layer waterproof coating for reliable performance in all conditions.
- 4-layer PCB with thick copper conductors — improves conductivity and heat dissipation by more than 100%.
- Teflon wiring — low resistance, high durability, and abrasion resistance.
- Equipped with XT30 connector — strong, heat-resistant, and built for long-term reliability.
High-Precision Optical Sensor
Performs tens of thousands of optical detections per second for precise cycling and gear recognition.
Uses non-contact optical sensing, ensuring no mechanical wear and ultra-long lifespan.
Quick & Easy Installation
No magnets, no stickers — simply drop it in and go.
Compatible with most Version 2 gearboxes, ideal for beginners and advanced users alike.
Multi-Layer Protection System
Enhanced circuit protection featuring:
- Over-current, over-temperature, and under-voltage safeguards
- Brushless motor protection
- Smart battery protection
- Peace of mind with every trigger pull
Oil-Resistant Optical Control
High-precision sensor combined with SMART SENSE algorithm ensures reliable operation even when gears or triggers are oily.
Keeps performance accurate and prevents false triggers in all conditions.
LDT ETU V2 Lite Troubleshooting Guide
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Beep Pattern
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LED Indicator
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Device Behaviour
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Possible Cause & Recommended Solution
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2 Beeps
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Flashes Blue Twice
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Motor does not rotate; repeats each trigger pull
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Low battery voltage. Replace or recharge your battery.
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3 Beeps
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Flashes Blue Three Times
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Motor fails to rotate; light and buzzer repeat every 5 cycles
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Mainboard overheating. Allow the unit to cool down before use.
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5 Beeps
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Flashes Blue Five Times
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Motor turns briefly (0.5s), then light and buzzer repeat 5 times
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Gear detection issue. Gears may be jammed or the motor installed incorrectly. Reinstall and ensure smooth gear rotation.
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1 Beeps
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Flashes Blue Once
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Motor runs normally but suddenly stops
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Circuit protection triggered. Short circuit detected in the battery, wiring, or spring contact. Disconnect the battery, fix the short, and retry.
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No Beep
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Blue Light Flashes Continuously
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Motor does not rotate
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Main power short-circuit protection. Disconnect the battery immediately, inspect wiring, and test again.
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No Beep
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Flashes Blue Five Times
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Motor does not rotate; LED cycles 5 times
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Motor not connected or motor damaged. Check all connectors, wiring, and motor condition before retrying.
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LDT ETU V2 LITE — Programming Setup Guide
Single / Burst Programming
(Keep the small SAFE / SEMI / AUTO labels and the “5s” icon the same positions as the original.)
- Move the selector to the middle SEMI position.
- Hold the trigger for 5 seconds until you hear one beep to enter burst programming.
- Press 1× → 1 beep — Single shot
- Press 2× → 2 beeps — 2-round burst
- Press 3× → 3 beeps — 3-round burst
- Press 4× → 4 beeps — 4-round burst
- Press 5× → 5 beeps — 5-round burst
Mag Prime Programming
(Keep the SAFE / SEMI / AUTO labels and the “8s” icon in the same positions as the original.)
- Move the selector to the middle SEMI position.
- Hold the trigger for 8 seconds until you hear two beeps to enter pre-cocking programming.
- Press 1× — Level 1
- Press 2× — Level 2
- Press 3× — Level 3
- Press 4× — Level 4
We recommend having our technicians to install mosfet, as any damage to the mosfet during unauthorized installation will void the warranty.
