1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your PUSOKEI Mini RF 2-Channel 433MHz Wireless Relay Switch. Please read this manual thoroughly before use to ensure proper functionality and safety. This device allows for wireless control of various electrical loads using a compact remote control.
2. Safety Information
- Ensure the power supply voltage matches the device's specifications (DC3.7-12V).
- Do not exceed the maximum load current of 2A for the relay contacts.
- All wiring should be performed by a qualified individual to prevent electrical shock or damage.
- Keep the device away from water, moisture, and extreme temperatures.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
3. Package Contents
Verify that all items are present in your package:
- 1 x PUSOKEI Mini RF 2-Channel Wireless Relay Module
- 1 x RF Remote Control (with 2 x CR2016 batteries installed)
- 1 x User Manual (this document)
4. Specifications
| Parameter | Value |
|---|---|
| Working Voltage | DC3.7-12V |
| Working Frequency | 433 MHz |
| Output Mode | Switch Signal |
| Maximum Load | 2A |
| Working Modes | Latching, Momentary, Interlocking (selectable via pads) |
| Remote Control Battery | 2 x CR2016 (75mAh) |
| Material | ABS |
5. Product Overview
The PUSOKEI Mini RF 2-Channel Wireless Relay Switch consists of a compact receiver module and a two-button RF remote control.

Figure 1: PUSOKEI Mini RF 2-Channel Wireless Relay Switch module and remote control. The module features wired connections for power and two output channels, while the remote has two buttons for control.

Figure 2: Close-up view of the relay module, showing the antenna coil, learning button, and connection pads for the wires. The module is designed for flexible operation and can learn multiple remote controls.
6. Setup
6.1 Wiring the Relay Module
The relay module requires a DC power input and provides two output channels to control external devices. Refer to the wiring diagram below for typical connections. Always ensure power is disconnected before making any wiring changes.
- Red Wire: Connect to DC Power Supply Positive (VCC, +3.7V to +12V).
- Black Wire: Connect to DC Power Supply Negative (GND).
- Yellow Wire: Channel 1 Output (Normally Open contact for switching an external load).
- Blue Wire: Channel 2 Output (Normally Open contact for switching an external load).
The yellow and blue wires act as switch contacts. Connect them in series with the load you wish to control and its power source. For example, to control a light, connect one end of the light to its power source, and the other end to the yellow wire. Then connect the blue wire to the other side of the light's power source (or common ground/positive, depending on your circuit design). Ensure the load's power source is separate from the module's power source if the load requires higher voltage or current than the module can supply directly.
6.2 Learning Remote Control (Pairing)
The relay module can be paired with multiple remote controls, and each button on a remote can be assigned a function. The module features a small learning button (refer to Figure 2 for its location, typically near the antenna coil).
- Clear Existing Codes (Optional): To clear all previously learned remote codes, press and hold the learning button on the relay module for approximately 8 seconds until the indicator LED flashes rapidly and then turns off. This resets the module.
- Enter Learning Mode: Briefly press the learning button once. The indicator LED on the module will light up, indicating it is in learning mode.
- Press Remote Button: While the LED is lit, press the desired button on your remote control (e.g., button 'A'). The indicator LED on the module will flash a few times and then turn off, confirming successful pairing.
- Test: Press the paired button on the remote. The relay should click, and the indicator LED should light up, indicating the relay is activated.
Repeat steps 2-3 for other buttons on the remote if you wish to assign them to different channels or functions, depending on the selected operating mode.
7. Operating Modes
The PUSOKEI Mini RF Relay Switch supports three operating modes: Momentary, Latching, and Interlocking. These modes are typically selected by adjusting jumpers or soldering specific pads on the relay module. Refer to the markings on your specific module for exact configuration details. If no markings are visible, consult the product's technical documentation or manufacturer support.

Figure 3: The relay module is capable of operating in latching, momentary, and interlocking modes, which are typically configured via onboard pads or jumpers.
7.1 Momentary Mode (Non-Latching)
In Momentary mode, the relay remains activated only as long as the remote control button is pressed. Releasing the button deactivates the relay. This mode is suitable for applications like garage door openers or electric strikes where temporary activation is desired.
7.2 Latching Mode (Toggle)
In Latching mode, pressing the remote control button once activates the relay, and it remains activated until the same button is pressed again to deactivate it. This acts like a toggle switch and is suitable for controlling lights or other devices that need to stay on or off until manually changed.
7.3 Interlocking Mode
In Interlocking mode, if one relay channel is activated, all other channels are automatically deactivated. For a 2-channel module, pressing button 'A' activates Channel 1 and deactivates Channel 2 (if active). Pressing button 'B' activates Channel 2 and deactivates Channel 1 (if active). This mode is useful for applications where only one output should be active at a time, such as motor direction control.
8. Maintenance
- Cleaning: Use a dry, soft cloth to clean the device. Do not use liquid cleaners or solvents.
- Battery Replacement: The remote control uses two CR2016 button cell batteries. If the remote's range decreases or it becomes unresponsive, replace the batteries. Open the remote control casing carefully to access the battery compartment.
- Environmental Conditions: Ensure the module is installed in a dry, well-ventilated area, away from direct sunlight and sources of heat or vibration.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Relay does not respond to remote. | 1. Remote batteries are low or dead. 2. Remote is not paired with the module. 3. Module is not receiving power. | 1. Replace remote batteries. 2. Follow the 'Learning Remote Control' steps to pair. 3. Check power connections to the module. |
| Relay activates but load does not turn on/off. | 1. Incorrect wiring of the load. 2. Load exceeds the relay's maximum current (2A). 3. Faulty load or external power supply. | 1. Verify load wiring according to Section 6.1. 2. Ensure load current is within specifications. Use an intermediate relay or contactor for higher loads. 3. Test the load and its power supply independently. |
| Remote range is poor. | 1. Low remote battery. 2. Obstructions or interference. 3. Module antenna is obstructed or damaged. | 1. Replace remote batteries. 2. Ensure clear line of sight or reduce distance. Avoid placing near large metal objects. 3. Ensure the module's antenna coil is not damaged or covered. |
10. Warranty and Support
PUSOKEI products are designed for reliability and performance. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims, technical support, or further assistance, please contact your retailer or the PUSOKEI customer service department with your product model number (PUSOKEIk2up0twbi83037) and purchase details.
Please retain your proof of purchase for warranty purposes.