
DIM/CT/RGB/RGBW/RGBCW LED Controller
B5-3A
Bluetooth 5.2 SIG Mesh

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- Small in size and light in weight, the shell is made of Covestro/Samsung PC flameretardant V0 grade material.
- Equipped with a soft-start and gradual-brightening function, it offers more comfortable visual experience for human eyes.
- Adopting Bluetooth 5.2 SIG Mesh communication protocol, it features strong networking capability, reliability and stability.
- 5-channel constant voltage output.
- Capable of controlling dimming, color temperature, RGB, RGBW, and RGBCW lamps.
- Can be used with Bluetooth Series B remote controls.
- Built-in 16 dynamic modes.
- One controller can receive signals from 30 remote controls.
- Input and output are separated at both ends to avoid wrong connection.
- The controller automatically transmits the remote control signal to another remote control, extending the remote control distance.
- One remote control can synchronously control multiple controllers.
- Wireless remote control can be realized through the L-Home APP, and with the smart gateway, rich automatic control and cloud scenarios can be achieved.
- Supports OTA upgrade, local scenarios, circadian lighting, and dynamic mode group synchronization.
Technical Parameters
| Model | B5-3A |
| Input signal | Bluetooth 5.2 SIG Mesh |
| Input voltage | 12-24V |
| Output voltage | 12-24V |
| Load current | 3A×5CH Max. 15A |
| Load power | 180W@12V 360W@24V |
| Protection | Short circuit, over-temperature, over-current protection, anti-reverse connection protection |
| Operating temperature | -25°C ~ 50°C |
| Product size | L91×W37×H21(mm) |
| Packaging size | L94×W39×H22(mm) |
| Gross weight | 46g |
Product Size

Terminal Description

Wiring Application Diagram

Recommend Applications

Recommend Applications
- Achieve fast dimming control.

- Both App and remote can control the driver after connecting the remote to the driver with App.

- Both App and Super Panel 6S can control the driver simultaneously after connecting the Super Panel 6S to the driver with App. By connecting the Super Panel to network, you are allowed to control the driver, cloud scenes and automation remotely with App.

- More applications of intelligent control are waiting for you to set up.
List of Compatible Devices
Smart Gateway: Serves as the control center of a smart home, enabling interconnection between Bluetooth devices and the cloud, as well as managing and controlling scenes and automation. It realizes remote control of smart devices such as Bluetooth-driven power supplies and switch panels.

CG-KIT: Enables the access of Bluetooth-driven power supplies to Apple Home via HomeKit, and also to all IoT platforms supporting the standard Matter protocol through Matter Bridge, including Apple Home, Google Home, Amazon Alexa, Samsung Smart Things, etc.

Smart Switch: Can control the on/off, dimming and color tuning of Bluetooth-driven power supplies. When used with a smart gateway, it can realize functions such as App remote control, scene linkage/automation.

Remote Control: Can control the on/off, dimming and color tuning of Bluetooth-driven power supplies. When used with a smart gateway, it can realize functions such as scene linkage.

Use with Bluetooth L-Home APP
- Register an account
The App is available on iOS or Android devices. Scan the QR code below with you mobile phone and follow the prompts to complete the App installation.
Open the App to log in or register an account.
http://www.ltech.cn/SuperPanel-app.html - Paring instructions
Open the APP and create a home if you are a new user. Click “+” icon in the upper right corner and access the “Add Device” list, then follow the prompts to add the device. Pick “Smart lighting-DIM light” from the list and follow the prompts to power on the device firstly. Make sure the device is not connected to the network. Then click ”Bluetooth Search” and follow the prompts to add the device.
- Control interface settings
After pairing up your device, go to the control interface. You’ll be able to achieve your desired lighting effects by changing brightness and color temperature. Click “Theme” and you’ll easily switch to multiple theme lighting effects with one tap. Click “Mode” and the App provides you editable advanced modes. Customize dynamic modes to put you into a more colorful life.
- Light groups
Users are able to combine the same type of light fixtures into a group to control them simultaneously. Once you create the group, you can set the dim level more easily. Pick “Group-DIM light group”from the list. Follow the prompts to rename the group and click ”Next” to pick the lights you are going to group together and click “Save”.
- Advanced functions
This driver can be linked up with gateway function devices (such as Super Panel 12S) to achieve the advanced functions from local scenes and cloud scenes to automation.

Reset the Device (Reset to Factory defaults)
Method 1: Ensure the driver is connected to the light fixture and is in a constantly lit state. Use a switch to continuously power on and off the driver 6 times (each power-off time is 15 seconds, and power on time is 2 seconds). After the sixth power-on time of 2 seconds, the light fixture will flash 3 times, indicating that the driver has been restored to the factory settings.

Method 2: Ensure the device is powered on and online, open the L-Home APP, locate the device and access its settings interface, then tap the Delete Device button. When the interface prompts “Deletion Successful”, it indicates the device has been restored to factory settings.

Method 3: Press and hold the pairing key for 6 seconds. The lamp flashes 5 times to indicate that the device has been restored to factory default settings.
FAQs
- What should I do if device addition fails?
1.1 Ensure the device is powered on normally and in an activated state;
1.2 Ensure the device to be added has not been added to any other account. If it has, manually restore it to factory settings;
1.3 Ensure the mobile phone and the device are as close as possible, with a recommended distance of no more than 20 meters;
1.4 If the device has been forcibly deleted, manually restore it to factory settings first, then add the device again. - What should I do if the device goes offline?
2.1 Please check if the device is powered on normally;
2.2 Please check if the router is working properly and the network is smooth;
2.3 If using remote control, please check if the mobile phone network is working properly and the network is smooth. - How to perform remote control / set up cloud scenes?
To use remote control / add and set up cloud scenes, it is necessary to use the company’s super panel together. - How to Share a Device?
Please go to “My” -> “Family Management”, select the family for which you want to share devices, then click “Add Member”. Follow the prompts to add the family member or friend with whom you want to share the device to this family, and the sharing process will be completed. - Inconsistent dimming for light films or groups in the same area?
There may be differences between hardware of different models. It is necessary to use the same model for group dimming to achieve better dimming consistency.
Attentions
- Products shall be installed by qualified professionals.
- Products are and not lightning proof non-waterproof (special models excepted). Please avoid the sun and rain. When installed outdoors, please ensure they are mounted in a water proof enclosure or in an area equipped with lightning protection devices.
- Good heat dissipation will prolong the working life of products. Please ensure good ventilation.
- Please check if the working voltage used complies with the parameter requirements of products.
- The diameter of wire used must be able to load the light fixtures you connect and ensure the firm wiring.
- Before you power on products, please make sure all the wiring is correct in case of incorrect connection that causes damage to light fixtures.
- If a fault occurs, please do not attempt to fix products by yourself. If you have any question, please contact your suppliers.
This manual is subject to changes without further notice. Product functions depend on the goods. Please feel free to contact our official distributors if you have any question.
Warranty Agreement
- Warranty periods from the date of delivery: 5 years.
- Free repair or replacement services for quality problems are provided within warranty periods.
Warranty exclusions below:
- Beyond warranty periods.
- Any artificial damage caused by high voltage, overload, or improper operations.
- Products with severe physical damage.
- Damage caused by natural disasters and force majeure.
- Warranty labels and barcodes have been damaged.
- No any contract signed by our company.
- Repair or replacement provided is the only remedy for customers. Our company is not liable for any incidental or consequential damage unless it is within the law.
- Our company has the right to amend or adjust the terms of this warranty, and release in written form shall prevail.
Update Log
| Version | Updated Time | Update Content | Updated by |
| A0 | 20231227 | Original version | Yang Weiling |
| A1 | 20250813 | Update the laser engraving, add certification icons; update the company address. | Shaoyun He |
| A2 | 20260409 | Update laser engraving and add APP-related content. | Shaoyun He |
Documents / Resources
![]() | B5-3A Bluetooth 5.2 LED Controller |
References
- User Manualmanual.tools
