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Product Information
The Ltech F4-3A is a professional-grade wireless receiver designed for seamless control of constant voltage LED lighting. As a key component of the LT-BUS control system, this 4-channel receiver acts as a reliable wireless light switch receiver, translating signals from a compatible remote into smooth dimming and color changes for your lights. Operating on a stable 2.4GHz frequency, it provides responsive control over a long range, making it an ideal choice for multi-zone residential and commercial projects. Its wide DC 5-24V input range and 3A per channel output offer excellent flexibility for powering various types of 4-channel LED strips, from RGBW to multiple runs of single-color strips.
Key Features
4-Channel PWM Control
Provides versatile control for RGBW, RGBA, or up to four independent zones of single-color LED strips.
Wide Voltage Compatibility
Operates on any DC voltage from 5V to 24V, making it compatible with a vast range of LED lighting products.
Stable 2.4GHz RF Signal
Ensures reliable, interference-free communication with a compatible remote control from up to 50 meters away (line-of-sight).
Robust Power Handling
Safely manages a continuous load of 3A per channel, with a total maximum capacity of 12A across all four channels.
Slim, Compact Profile
Its slender design (125x33x20mm) allows for easy installation and concealment in tight spaces like cabinets, coves, and furniture.
LT-BUS System Integration
Designed to pair flawlessly with a wide variety of Ltech F-series and Q-series remote controls for intuitive operation.
Technical Highlights
- Utilizes an advanced 2.4GHz wireless protocol for fast response and strong anti-interference capability.
- Employs Pulse-Width Modulation (PWM) for smooth, flicker-free dimming across the entire brightness range.
- Constant voltage output design ensures consistent performance with standard non-addressable LED strips.
- Features a power-off memory function that restores the last used setting when power is returned.
Product Specifications
| Parameter | Details |
|---|---|
| Model | F4-3A |
| Working Frequency | 2.4GHz |
| Input Voltage | DC5V ~ DC24V |
| Max Current Load | 3A × 4CH, Max 12A total |
| Max Output Power | 60W (5V) / 144W (12V) / 288W (24V) |
| Control Distance | 50m (line of sight) |
| Working Temperature | -30℃ to 55℃ |
| Dimensions (L×W×H) | 125 × 33 × 20 mm |
| Package Size (L×W×H) | 127 × 35 × 24 mm |
| Gross Weight | 60g |
Application Scenarios
How to Control & Use This Controller
- Connect Power Supply: Securely wire the output from your DC 5-24V power supply to the 'INPUT' screw terminals on the receiver. Ensure correct polarity (+ to + and - to -).
- Connect LED Strips: Connect the common anode (V+) wire and the four channel wires (e.g., R, G, B, W) from your LED strip to the corresponding 'OUTPUT' terminals (V+, CH1, CH2, CH3, CH4).
- Pair with Remote: Follow the pairing instructions for your compatible Ltech remote control (sold separately). This typically involves pressing a 'Learning Key' on the F4-3A receiver while sending a signal from the remote.
- Test Functionality: Once paired, use the remote to test all functions, including on/off, dimming, and color changing, to confirm a successful connection.
- Always use a power supply with a voltage that matches your LED strips (e.g., a 12V power supply for 12V strips).
- Do not exceed the maximum load of 3A per channel or 12A total for the receiver. For larger loads, use a power amplifier.
- Ensure adequate ventilation around the receiver to dissipate heat during operation.
- The 50m remote distance is rated for open, line-of-sight conditions. Walls, furniture, and other obstructions will reduce the effective wireless range.
What's in the Box
- ✓1 x Ltech F4-3A Wireless Receiver
- ✓1 x User Manual
⇩ Downloads & Documents
PDFF4-3A
Frequently Asked Questions
Q: What remote controls are compatible with the F4-3A receiver?
A:The F4-3A is designed to work with Ltech's F-series and Q-series 2.4GHz RF remote controls and touch panels. Please check the remote's specifications for compatibility.
Q: Can I control four separate white LED strips with this one receiver?
A:Yes, you can connect four independent single-color LED strips and control each one on a separate channel using a compatible multi-zone remote.
Q: What is the main difference between the F4-3A and the F4-5A model?
A:The primary difference is the current capacity. The F4-3A handles up to 3 Amps per channel, while the sibling F4-5A model supports a higher load of 5 Amps per channel.
Q: Does this receiver use WiFi or Bluetooth?
A:No, it operates on a dedicated 2.4GHz Radio Frequency (RF) signal. This provides a direct, stable connection to the remote without relying on a WiFi network or Bluetooth pairing.
Q: Do I need a separate power supply for the receiver itself?
A:No, the receiver is powered by the same DC 5-24V power supply that you use for your LED strips, which connects to its input terminals.
Q: Is this receiver suitable for addressable or 'pixel' LED strips?
A:No, this is a constant voltage PWM receiver for standard 4-channel LED strips like RGBW. It does not output the data signal required for addressable ICs like WS2811 or SK6812.
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Customer Experience
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Downloads
Files for F4-3AImages
These images were taken with Canon EOS 5D Mark IV and the studio light source is provided by Ra 98's full spectrum LED strip to realistically reproduce the colors of the item itself. All copyrights are created by the superlightingled team, please feel free to browse and download if you are a registered user!
LED Strip Lights Guide
Here you can learn anything about LED strip lights — pick the topic you are interested in to go deeper. We cover LED strip lights, power supplies, controllers, accessories, and how to connect LED strip lights. You can also watch our demo videos.
Led strip lights
►Everything you need to know before you buying led strip lights
| Top 6 Considerations Before Buying LED Strip Lights 1. Where do I want to place the LED strip lights? Indoor or outdoor? • What are waterproof led strip lights? • How to cut and connect waterproof led strip lights? 2. How much LED brightness do I need? 3. The working voltage is available? • 5V VS 12V VS 24V led strips • AC VS DC 4. How long is the LED strip light suitable for my project? 5. Do I need an LED light controller to adjust the LED color and brightness? 6. How to power the LED strip lights? 1. How do led strip lights work? 2. How long can you run an LED strip? 3. How long do LED strip lights last? Is it worth getting led strip lights? 1. Do LED strip lights use a lot of electricity? 2. Why are LED lights energy efficient? 3. Are LED Strip Lights sustainable? 4. What are the pron and cons of led strip lights? 5. Precautions for led strip lights 1. Do LED strip lights overheat? 2. How do you stop LED strips from overheating? 3. Can LED strips catch fire? 4. Is it safe to sleep with LED strip lights on? What are the types of led strip lights? Flexible led strip lights VS rigid led strip lights - 1. What are flexible led strip lights? 2. What are rigid led strip lights? 3. What happens if you bend LED strip lights? 4. What is the difference between flexible led strips and rigid led strips? 1. Can you cut led light strips? 2. What happens if you cut an led strip? 3. How to cut led strip lights? 4. How to connect RGB color changing led strip lights with a connector? 5. How to know what your led strip light is? How to choose the correct SMD led for your strip? Which is the brightest SMD LED? What does SMD 5050 mean? How many lumens is a 5050 SMD LED? How to know what type of LED strip? What is the difference between 2835 and 5050 LED? |
►COB led strip light
| 1. What is COB? 2. What is the COB production process? 3. Different types of COB strip lights 4. What is the difference between COB and SMD led strip lights? 5. What is the difference between COB and LED? 6. Are COB led strips better? 7. How to cut and connect COB led strips? 8. How to install COB led strip lights? 9. Can COB light strips use aluminum channels? 10. Why choose superlightingled? |
►Led neon lights
| 1. What is led neon light? 2. What are neon led lights used for? 3. Are led neon lights good? 4. How to choose led neon rope lights? 5. Are led neon ropes use DC or AC? 6. Can you change the light-emitting angle or the luminous way of neon led strip? 1. How to cut led neon lights 2. Can led neon lights be connected? 3. Easy 7 steps to make led neon lights 4. How to install led neon rope? |
►Addressable led strip
| Ultimate Guide to Choosing the Right Addressable LED Strip What is an addressable LED strip? Can you cut addressable LED strips? How to judge if an LED strip is individually addressable? How to choose the best DC12V addressable led strips? How to choose the best DC5V digital led strips? How to choose the right IC for your project? Which IC is most commonly used? How do I know my IC type? How do I know if my IC is good or bad? How many types of IC are there? |
►Color, color temperature, and CRI
| The Color Difference Between Warm White 2700K, 3000K, 4000K, 6000K Pure White and 7000K Cool White 1. What is color temperature? 2. What color temperature is right for me? • 2700K VS 3000K • How obvious is the difference between 2700K and 3000K? • Warm White 3000K VS Natural White 4000K VS Daylight White 6000K • Warm White VS Cool White 3. Enjoy 2700K, 4000K, 6000K 4. Further Reading: How to install Warm White LED light strip? How to choose the right color for your led strip lights? - 1. How many colors are in LED strip lights? 2. What do LED light colors mean? 3. Why do white LED light turns to yellow? 4. Why are your led strip lights not the same color? 5. What is the most relaxing color for LED lights? 6. What color led lights is best for sleeping? 7. Are led lights bad for your eyes? 8. Is cool white or warm white better for eyes? 1. What is the best color temperature? 2. Does color temperature keep the same as time goes by? 3. What color temperature is best for night? 4. Led strip lights about color temperature,CCT VS RGBW VS RGBCCT; What is color rendering index? 1. What is CRI in led lights? 2. How to choose the right CRI when buying led strip lights? 3. What is the relationship between CRI and brightness? 4. Is higher CRI better? High CRI VS Low CRI; 5. How to find CRI value? |
Led strip light connection
| How to connect led strip lights? 1. How to connect led strip lights together? 2. How to connect LED light strips without connectors? 3. How to solder wires to LED strips? 4. How to connect LED strips without soldering? 5. Which one is better between soldering and using a connector? 6. How to connect mutiple led strip lights? 7. How many LED strip lights can you connect? How to connect led strip to the power supply? 1. Ensuring the working voltage and power first 2. How to hardwire led strip lights? 3. Can I connect multiple LED strips to the same LED power supply? How to wire led strip lights? How to wire single color led strip lights? How to wire tunable white/CCT led strip lights? How to wire RGB color changing led strip lights? |
Controller for led strip lights
| How to choose led strip light controllers? 1. WIFI controller 2. RF controller 3. IR controller 4. Bluetooth controller 5. Remote control and panel control 6. Single color controller and multi-color controller 7. DMX512 controller 8. SPI controller 9. DALI controller 10. 0/1-10V dimmer 11. Triac series 12. Sonsor series |
Led power supply
| How to calculate power for led strip lights? 4 steps to calculate the power you need Performance And Reasons Of LED Voltage Drop How to choose led strip light power supply? 1. Alternating current power supply VS Direct current power supply 2. Constant current power supply VS Constant voltage power supply 3. How to choose the best led power supply for your led strip light? |
Led strip light installlation
| How to install led strip lights? What accessories will be needed? 1. Adhesive installation for IP20 and IP65 led strip lights 2. How to choose the right led tape? 3. Can IP20 and IP65 led strip lights use aluminum profiles? 4. How to use aluminum profiles? 5. Mounted clip installation for IP67 and IP68 light strips How to install LED sensor stair lights? Lighting Up Your Stairs With LED Strip Lights Ideas How to install led strip lights on TV? How to install led strip lights outdoor? |
Accessories
| How to choose led strip light connectors? 1. Are all LED light strip connectors the same? 2. How do LED strip lights connectors work? 3. What connectors do you need for LED strip lights? 4. What are the different kinds of LED connectors? 5. How to choose the right connector for your led strip lights? Ultimate Guide on Aluminum Profile for LED Strip Lighting 1. What are aluminium profiles used for? 2. Why choose aluminum profiles? 3. Different types of LED aluminum profiles 4. LED aluminum profile VS COB LED strips 5. How to install LED aluminum channels? 6. How To Get Ideal Light Diffuser For Your LED Strip? 7. Add Black Aluminum LED Light Diffusers For Your Home Lighting 8. How To Find The Right Aluminum LED Light Strip Diffuser Channel? |
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