Wireless Remote Control Switch RF Relay Receiver Module User Manual

1. Product Overview

This manual provides detailed instructions for the 433Mhz DC 12V 2-channel wireless remote control switch system, comprising a transmitter (remote control) and a receiver module. This system is designed for various applications requiring remote control of electrical devices.

Figure 1: Complete Wireless Remote Control Switch Kit, including the remote control and receiver module.

2. Specifications

2.1 Transmitter (Model: KT05-4)

Figure 2: The remote control and receiver module. The remote control includes a pre-installed battery.

2.2 Receiver (Model: KR1202-4)

Figure 3: Top and bottom views of the KR1202-4 receiver module circuit board.

3. Package Contents

The package contents vary based on the selected option:

• Package List 1: 1Pcs * KT05-4 EV1527 Learning Code Remote Control (Includes Battery)
• Package List 2: 1Pcs * KR1202-4 2CH Receiver Module (Includes Shell)
• Package List 3: 1Pcs * KR1202-4 2CH Receiver Module (Includes Shell) + 1Pcs * KT05-4 EV1527 Learning Code Remote Control (Includes Battery)
• Package List 4: 1Pcs * KR1202-4 2CH Receiver Module (Includes Shell) + 2Pcs * KT05-4 EV1527 Learning Code Remote Control (Includes Battery)
• Package List 5: 1Pcs * KR1202-4 2CH Receiver Module (Includes Shell) + 3Pcs * KT05-4 EV1527 Learning Code Remote Control (Includes Battery)

4. Setup and Programming

4.1 Powering the Receiver Module

Connect a DC 12V power supply to the receiver module's input terminals. Ensure correct polarity (positive to '+' and negative to '-'). The receiver is designed for fixed wiring connections.

Figure 4: The receiver module showing the DC 12V input terminals and the "Learning Button" (KEY).

4.2 Learning a Remote Control (Pairing)

The receiver module uses an intelligent learning code system to pair with remote controls. Follow these general steps to pair a new remote:

1. Ensure the receiver module is powered on.
2. Press the "Learning Button" (labeled "KEY" on the PCB, refer to Figure 4) on the receiver module. An indicator light on the receiver will illuminate, indicating it is in learning mode.
3. While the indicator light is on, press any button on the remote control you wish to pair (e.g., Button A or B).
4. The indicator light on the receiver will flash or turn off, confirming successful pairing.
5. Test the remote control to ensure it operates the receiver as expected.

Figure 5: Demonstrating the use of the remote control with the receiver module.

4.3 Deleting Existing Remote Controls

To clear all paired remote controls from the receiver's memory:

1. Ensure the receiver module is powered on.
2. Press and hold the "Learning Button" (KEY) on the receiver module for approximately 8 seconds.
3. The indicator light will flash rapidly and then turn off, indicating that all stored remote controls have been successfully deleted.
4. After deletion, no previously paired remote controls will be able to operate the receiver until they are re-paired.

5. Operating Modes

The KR1202-4 receiver module supports two primary working modes: Momentary and Toggle. The specific mode is typically configured during the learning process or via jumpers on the board (refer to product documentation or supplier for exact mode configuration instructions if not covered by learning button sequence).

5.1 Momentary Mode

In Momentary mode, the relay output is active only while the corresponding button on the remote control is being pressed. Releasing the button deactivates the relay.

• Press and hold Button A: Relay 1 activates. Release Button A: Relay 1 deactivates.
• Press and hold Button B: Relay 2 activates. Release Button B: Relay 2 deactivates.

5.2 Toggle Mode

In Toggle mode, each press of a button on the remote control toggles the state of the corresponding relay. One press activates the relay, and the next press deactivates it.

• Press Button A once: Relay 1 activates. Press Button A again: Relay 1 deactivates.
• Press Button B once: Relay 2 activates. Press Button B again: Relay 2 deactivates.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the remote control and receiver module. Avoid using abrasive cleaners or solvents.
• Battery Replacement (Transmitter): When the remote control's range decreases or it becomes unresponsive, replace the 3V coin cell button battery. Refer to Figure 6 for the remote control's appearance.
• Environmental Conditions: Keep the devices dry and away from extreme temperatures, humidity, and corrosive environments.
• Storage: If storing for extended periods, remove the battery from the remote control to prevent leakage.

Figure 6: Close-up view of the KT05-4 remote control.

7. Troubleshooting

8. Warranty and Support

This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms, technical support, or service inquiries, please refer to the seller or manufacturer's contact information provided at the point of purchase. Keep your purchase receipt as proof of purchase.