The Etronix EX4GPro is a 4-channel 2.4GHz Frequency Hopping Spread Spectrum (FHSS) digital proportional radio system, engineered for precision control of RC cars, boats, and other surface models. Combining reliability, programmability and ease of use, it’s an ideal choice for hobbyists and racers a like.
Features
- 4-Channel FHSS Digital System – Stable, interference-free signal performance.
- High Precision Control – Fully proportional steering and throttle response.
- Comprehensive Menu System – Programmable EPA, D/R, Mixing, and more.
- Model Memory – Store up to 6 unique model profiles.
- Failsafe Function – Protects your model in case of signal loss.
- Telemetry Ready – Monitor transmitter and receiver voltage in real time.
- Digital Trim Adjustments – Fine-tune throttle and steering for perfect balance.
- ABS Braking & Curve Adjustments – Customise throttle and steering response curves.
- Timer Function – Ideal for racing sessions or battery management.
Transmitter Specifications
Channels: 4
Frequency Band: 2.4GHz FHSS
Power Supply: 4 x AA batteries
Operating Voltage: 4.8 – 6.0V
Display: Backlit LCD
Adjustable Parameters: ST.D/R, EPA, Reverse, ST/TH Curves, ABS, Mixing, Throttle Hold, Model Memory, Timer, Telemetry, Sound, Monitor
Operating Range: Up to 250m (terrain dependent)
Model Memory: 6 profiles
Failsafe: Programmable throttle fail position
Receiver Specifications
Model: ET1163 (compatible)
Channels: 4
Frequency: 2.4GHz FHSS
Input Voltage: 4.8 – 6.0V
Failsafe: Supported (Configurable throttle position)
Antenna Length: 26mm
Functions & Settings
Trim Adjustment
- Steering Trim (ST.TRIM): Adjusts 1CH steering centre for straight tracking.
- Throttle Trim (TH.TRIM): Adjusts 2CH neutral throttle position.
- Adjustment Range: -60 to +60, with audible beep at neutral and endpoints.
Steering Dual Rate (ST.D/R)
Controls maximum steering servo travel.
Adjustment range: 0% – 120%, default 100%.
End Point Adjustment (EPA)
Limits servo travel per channel.
Range: 0% – 120%, default 100%.
Throttle Hold (Idle-Up)
Applies preset throttle at neutral. Adjustable 0–100% (linear scale).
Use for engine warm-up, not while driving.
Channel Reverse
Reverses servo direction on any channel.
Steering & Throttle Curves
- Adjust servo sensitivity across travel range.
- Positive = sharper initial response.
- Negative = smoother initial response.
ABS Braking
Pulse braking for smoother deceleration and straight tracking.
Parameters include:
- PT (Activation point)
- WD (Brake pulse distance)
- CY (Pulse speed)
- DT (Brake release delay)
Model Memory
Store up to 6 model profiles, each with unique binding and settings.
Channel Mixing
Supports combinations: 2CH/3CH, 2CH/4CH, 3CH/4CH for advanced setups.
Timer
Count-up or countdown modes with audible alarm.
Telemetry
Displays TX/RX voltage and warns of low-voltage conditions (<4.6V for 3+ seconds).
Reset Function
Restores factory defaults (erases all model memories).
Sound Control
Toggle audible tones, alarms, and timers ON/OFF.
Channel Monitor
Displays real-time servo pulse values (approx. 1000–2000µs).
Digital 4CH
Optional 4th channel, usable in mixed or proportional mode.
Can be paired with 2CH or 3CH for advanced mixed control.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
