DieseRC B09L7KMV1M
DieseRC RF Relay Switch Wireless Remote Control User Manual
Model: B09L7KMV1M
Brand: DieseRC
1. Introduction
Thank you for choosing the DieseRC RF Relay Switch Wireless Remote Control. This device is designed to provide convenient remote control functionality for various DC12V applications, allowing for easy integration into DIY projects. Please read this manual thoroughly before installation and operation to ensure proper use and safety.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the device:
- Ensure the power supply matches the specified voltage (DC12V) and current rating (10A) for the receiver module.
- Disconnect power before performing any wiring or maintenance.
- Do not expose the device to moisture, extreme temperatures, or corrosive environments.
- Keep the device out of reach of children.
- If you are unsure about any wiring procedures, consult a qualified electrician.
3. Product Overview
The DieseRC RF Relay Switch system consists of a receiver module and a remote control transmitter. The receiver module is a compact circuit board with a relay, learning button, indicator light, and terminal blocks for connections. The remote control allows for wireless operation of the connected device.

Image: The DieseRC RF Relay Switch receiver module and its accompanying remote control transmitter.
3.1 Receiver Module Components

Image: Detailed view of the receiver module with labels for its various components, including the antenna, learning button, indicator light, and terminal connections.
- Antenna: For receiving RF signals from the transmitter.
- Learning Button: Used to pair the remote control and set operating modes.
- Indicator Light: Provides visual feedback during pairing and operation.
- Terminal Blocks:
- +V / -V: Power input for the receiver module (DC12V).
- COM (Common): Common terminal for the relay switch.
- NO (Normally Open): The relay contact is open when inactive and closes when activated.
- NC (Normally Closed): The relay contact is closed when inactive and opens when activated.
3.2 Remote Control Transmitter
The remote control features buttons for activating and deactivating the relay. It operates at a 433MHz frequency and uses either 1527 learning code or 2262 fixed code for secure communication with the receiver.

Image: The remote control and receiver module, highlighting the 433MHz operating frequency and support for 1527 learning code or 2262 fixed code.
4. Setup and Wiring
4.1 Wiring the Receiver Module
The receiver module requires a DC12V power supply for its operation and can switch loads with input/output voltages ranging from 1V to 250V. Connect your device to the COM and NO (Normally Open) terminals for typical applications where the device turns on when the relay is activated. Use COM and NC (Normally Closed) if you need the device to turn off when the relay is activated.

Image: Example wiring diagram showing connections for DC12V power input to the receiver module and connections to a load using the COM, NO, and NC terminals.
Wiring Steps:
- Connect the DC12V power supply to the +V and -V terminals of the receiver module. Ensure correct polarity.
- Connect one wire from your load (e.g., lamp, motor) to the COM terminal.
- Connect the other wire from your load to either the NO or NC terminal, depending on your desired operation.
- Connect the remaining power supply wire for your load to the appropriate terminal of the load, completing the circuit.
4.2 Pairing the Remote Control (Setting Operating Modes)
The receiver module supports four operating modes: Momentary, Toggle, Latched, and Delay. Follow the instructions below to pair your remote control and set the desired mode.
General Pairing Procedure:
- Press the learning button on the receiver module the specified number of times for your desired mode. The indicator light will turn on.
- Press any button on your remote control. The indicator light on the receiver will flash, indicating successful pairing.
- Wait approximately 3 seconds for the indicator light to turn off. The pairing is complete.
4.2.1 Momentary Mode
In Momentary Mode, the relay is activated only while the remote control button is pressed. Releasing the button deactivates the relay.

Image: Visual guide for setting up Momentary Mode, showing the learning button press and remote button press sequence.
Setup:
- Press the learning button on the receiver 1 time.
- Press the desired button on your remote control.
4.2.2 Toggle Mode
In Toggle Mode, pressing the remote control button once activates the relay, and pressing the same button again deactivates it.

Image: Visual guide for setting up Toggle Mode, illustrating the learning button press and remote button press sequence.
Setup:
- Press the learning button on the receiver 2 times.
- Press the desired button on your remote control.
4.2.3 Latched Mode
In Latched Mode, one button on the remote activates the relay, and another button on the same remote deactivates it. This mode typically requires a remote with at least two distinct buttons (e.g., ON/OFF).

Image: Visual guide for setting up Latched Mode, showing the learning button press and the two distinct remote button presses for ON and OFF.
Setup:
- Press the learning button on the receiver 3 times.
- Press the 'ON' button on your remote control.
- Press the 'OFF' button on your remote control.
4.2.4 Delay Mode
In Delay Mode, the relay activates when the remote button is pressed and automatically deactivates after a set delay (e.g., 5, 10, 15, or 20 seconds).

Image: Visual guide for setting up Delay Mode, showing the learning button presses for different delay times and the remote button press.
Setup:
- Press the learning button on the receiver 4 times for 5-second delay.
- Press the learning button on the receiver 5 times for 10-second delay.
- Press the learning button on the receiver 6 times for 15-second delay.
- Press the learning button on the receiver 7 times for 20-second delay.
- After selecting the delay, press the desired button on your remote control.
4.3 Clearing Paired Remotes
To clear all paired remote controls from the receiver module:
- Press the learning button on the receiver 8 times.
- The indicator light will flash several times and then turn off, indicating that all stored remote codes have been cleared.
5. Operating Instructions
Once the remote control is successfully paired with the receiver module in your desired operating mode, simply press the corresponding button(s) on the remote to control the connected device. The typical operating range is up to 50 meters in open areas, but this can be affected by obstacles and interference.
6. Maintenance
The DieseRC RF Relay Switch is designed for low maintenance. Follow these guidelines to ensure longevity:
- Cleaning: Use a dry, soft cloth to clean the receiver module and remote control. Do not use liquid cleaners or solvents.
- Battery Replacement (Remote Control): If the remote control's range decreases or it stops responding, the battery may need replacement. Refer to the remote control's specific model for battery type and replacement instructions.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Remote control not responding. | Low battery in remote, not paired, out of range, interference. | Replace remote battery. Re-pair the remote control (see Section 4.2). Move closer to the receiver. Check for strong interference sources. |
| Connected device does not turn on/off. | Incorrect wiring, no power to receiver, faulty load. | Verify all wiring connections (see Section 4.1). Ensure DC12V power is supplied to the receiver. Test the connected device independently. |
| Short operating range. | Obstacles, interference, antenna position. | Ensure clear line of sight between remote and receiver. Avoid placing receiver near large metal objects or other RF devices. Adjust receiver antenna position. |
| Receiver indicator light not working. | No power, faulty unit. | Check DC12V power supply to the receiver. If power is present and light still off, the unit may be faulty. |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | DieseRC |
| Model | B09L7KMV1M |
| Receiver Input Voltage | DC 12V |
| Relay Load Voltage Range | 1V - 250V |
| Rated Current | 10 Ampere |
| Operating Frequency | 433MHz |
| Code Type | 1527 Learning Code / 2262 Fixed Code |
| Operating Modes | Momentary, Toggle, Latched, Delay |
| Installation Type | Surface Mount |
9. Warranty and Support
For warranty information or technical support, please contact DieseRC customer service through the retailer's platform or the official DieseRC website. Please have your product model number (B09L7KMV1M) and purchase details ready when contacting support.
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