1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the CHX-304A LED Smoke Machine Circuit Board. This board is designed to control fog machines, often used in stage lighting and special effects, and includes a remote control for convenient operation.
2. Package Contents
Depending on your purchase, your package may include:
- CHX-304A Main Circuit Board
- Wireless Receiver Module (integrated or separate)
- Remote Control (with R, G, B, F buttons)
- Connecting wires (if part of a complete set)

Figure 2.1: CHX-304A Main Circuit Board and Remote Control (A complete set)
3. Product Overview
The CHX-304A circuit board serves as the central control unit for your smoke machine. It features input/output terminals for power and control signals, and a dedicated interface for the wireless receiver module.

Figure 3.1: Main Circuit Board with labeled terminals (L INPUT N, L OUTPUT N, +12V+, RGB)

Figure 3.2: Wireless Receiver Module with labeled pins (GND, DAT, 5V)

Figure 3.3: Remote Control
4. Setup and Installation
Important Compatibility Note:
To ensure proper functionality and compatibility, it is highly recommended to purchase the entire set (main board, receiver, and remote). If you are purchasing components separately, please verify that the model is universally compatible with your existing smoke machine components. The manufacturer is not responsible for issues arising from non-universal component compatibility.
4.1 Wiring Instructions
Refer to the application diagram and detailed board images for correct wiring. Ensure all power is disconnected before making any connections.
- Power Input: Connect the main power supply to the "L INPUT N" terminals on the CHX-304A main board.
- Power Output: Connect the smoke machine's power input to the "L OUTPUT N" terminals.
- LED Control (if applicable): Connect any external LED lighting for the smoke machine to the "+12V+" and "RGB" terminals.
- Receiver Module Connection: Connect the wireless receiver module to the designated pins on the main board, ensuring correct alignment of GND, DAT, and 5V.

Figure 4.1: General Application Diagram
Safety Warning:
Incorrect wiring can damage the circuit board or the smoke machine. If you are unsure about any wiring steps, consult a qualified technician.
5. Operation
5.1 Remote Control Operation
Once the circuit board is correctly installed and powered, you can operate your smoke machine using the provided remote control.
- R (Red), G (Green), B (Blue) Buttons: These buttons are typically used to control the color of any integrated LED lighting on the smoke machine. Press to cycle through or select colors.
- F (Fog) Button: Press this button to activate the fog output of the smoke machine. Press again to stop.
5.2 Manual Control
The main board may also support manual control options, indicated by "手动控制" (manual control) on the board. Consult your smoke machine's specific instructions for manual override or direct control methods if available.
6. Maintenance
To ensure the longevity and optimal performance of your CHX-304A circuit board:
- Keep the board clean and free from dust and debris. Use a soft, dry brush or compressed air for cleaning.
- Avoid exposing the board to moisture or extreme temperatures.
- Regularly check all connections to ensure they are secure.
- If the remote control stops responding, check its battery (if applicable) and ensure there are no obstructions between the remote and the receiver.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Smoke machine does not activate. | No power to the board; incorrect wiring; faulty remote/receiver. | Check power connections (L INPUT N). Verify wiring to smoke machine (L OUTPUT N). Ensure remote has power and is within range. |
| Remote control unresponsive. | Remote battery low/dead; receiver module disconnected/faulty; interference. | Replace remote battery. Check receiver module connection (GND, DAT, 5V). Reduce potential interference sources. |
| LED lights not changing color. | Incorrect RGB wiring; LED strip faulty. | Verify connections to +12V+ and RGB terminals. Test LED strip separately if possible. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | CHX-304A |
| Power Source | AC |
| Professional Light Type | Stage Lights |
| Use | Professional |
| Installation Method | Assembly |
| Luminous Flux | <60 (Units not specified, likely Lumens) |
| Is Bulbs Included | No (Refers to the board itself, not the smoke machine) |
| Origin | Mainland China |
| Package Weight | 0.2 kg |
| Package Dimensions (L x W x H) | 12 cm x 10 cm x 10 cm |
9. User Tips
- Always double-check wiring before applying power to prevent damage.
- For best performance, ensure the wireless receiver module has a clear line of sight to the remote control.
- Consider using appropriate enclosures to protect the circuit board from environmental factors like dust and moisture.
10. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the vendor directly. Keep your purchase records for any warranty claims.





