1. Introduction
This manual provides detailed instructions for the installation, operation, and programming of your QIACHIP 433Mhz 1-Channel Wireless Relay Receiver Module and its accompanying RF Transmitter. This system is designed for various remote control applications, supporting a wide voltage range from DC 5V to 60V.
2. Safety Information
- Ensure the power supply voltage is within the specified range (DC 5V-60V) to prevent damage to the device.
- Disconnect power before performing any wiring or maintenance.
- Do not expose the device to moisture or extreme temperatures.
- Only use the QIACHIP remote control (transmitter) with this receiver. Compatibility with other brands is not guaranteed.
3. Product Overview and Components

Receiver Module (KR3001A-TM-4)

The receiver module features an antenna for signal reception, an LED indicator for status, a learning button for programming, and screw terminals for wiring connections.
- V-: Negative electrode
- V+: Positive electrode
- NO: Normal Open
- COM: Common terminal
- NC: Normal Close
Transmitter (Remote Control, KT28)

The transmitter is a compact remote control powered by a 3V coin cell button battery (included). It typically features two buttons for control.
4. Specifications
Receiver Specifications (KR3001A-TM-4)
| Attribute | Value |
|---|---|
| Model Number | KR3001A-TM-4 |
| Operating Voltage | DC 5V-60V |
| RF Frequency | 433MHz / 433.92MHz |
| RF Working Mode | Superheterodyne Reception |
| Modulation Mode | ASK |
| Quiescent Current | 5mA |
| Receiving Sensitivity | >97dbm |
| Theoretical Remote Control Distance | >80-100m (actual distance varies) |
| Wired Connection Way | Fixed Wiring Pillar |
| Decoding Mode | MCU Software Decoding |
| Working Modes | Momentary, Toggle, Latching, Time Delay (5s, 10s, 15s) |
| Working Temperature | -10°C ~ +80°C |
| Dimensions | 35 x 31.5 x 17mm (approx.) |
| Weight | 25.4g (approx.) |
Transmitter Specifications (KT28)
| Attribute | Value |
|---|---|
| Model Number | KT28 |
| Operating Frequency | 433MHz |
| Power Source | 3V Coin Cell Button Battery (included) |
| Material | PVC |
| Buttons | 2 Buttons |
| Operating Voltage | 3V |
| Operating Current | 12mA |
| Transmitting Power | 10mw |
| Modulation Mode | ASK (AM) |
| Encoding Type | Learning Code (1527 & 2262) |
| Transfer Distance | 20-100 m |
| Dimensions | 60 x 20 x 8mm (approx.) |
5. Installation & Wiring
Before wiring, ensure all power sources are disconnected. The receiver supports a wide DC voltage input from 5V to 60V. The output terminals (NO, COM, NC) act as a switch for your load.
General Wiring Principles
- V+ and V-: Connect to your DC power supply (5V-60V).
- COM (Common): Connect one side of your load (e.g., light bulb, motor) to the COM terminal.
- NO (Normally Open): Connect the other side of your load to the NO terminal if you want the circuit to be open (off) by default and close (on) when the remote is pressed.
- NC (Normally Closed): Connect the other side of your load to the NC terminal if you want the circuit to be closed (on) by default and open (off) when the remote is pressed.
Wiring Diagrams



6. Operating Modes & Programming
The receiver supports four working modes: Momentary, Toggle, Latching, and Time Delay. You can program the receiver to operate in any of these modes using the learning button.
Clearing the Code (Reset Settings)
To clear all previously learned remote control data from the receiver's memory:
- Press the receiver's learning button 8 times.
- The receiver's LED light will flash, indicating that the reset function is complete. All previously paired remote controls will no longer work.
Learning the Code (Programming Modes)
After clearing the code, you can program the desired operating mode:
Momentary Mode
In Momentary mode, the relay connects only while the remote button is pressed and disconnects when released.
- Press the receiver's learning button once.
- Wait for the LED on the receiver to light up, indicating it has entered the setting state.
- Press a button (e.g., button A) on the remote control once. The LED indicator on the receiver will flash and then turn off.
- The Momentary Mode is now successfully set.
Toggle Mode
In Toggle mode, the relay connects with one press of the remote button and disconnects with a second press of the same button.
- Press the receiver's learning button twice.
- Wait for the LED on the receiver to light up, indicating it has entered the setting state.
- Press a button (e.g., button A) on the remote control once. The LED indicator on the receiver will flash and then turn off.
- The Toggle Mode is now successfully set.
Latching Mode
In Latching mode, one remote button turns the relay ON, and another remote button turns it OFF. This mode requires two distinct buttons on the remote.
- Press the receiver's learning button three times.
- Wait for the LED on the receiver to light up, indicating it has entered the setting state.
- Press the first button (e.g., button A) on the remote control once. The LED indicator on the receiver will flash and then light up continuously.
- Press the second button (e.g., button B) on the same remote control. The indicator will flash and then turn off.
- The Latching Mode is now successfully set (Button A = ON, Button B = OFF).
Time Delay Mode
In Time Delay mode, the relay connects when the remote button is pressed, and after releasing the button, it disconnects automatically after a set delay (5s, 10s, 15s, or 20s).
- Press the receiver's learning button the required number of times for the desired delay:
- 4 times for 5 seconds delay
- 5 times for 10 seconds delay
- 6 times for 15 seconds delay
- 7 times for 20 seconds delay
- Wait for the LED on the receiver to light up, indicating it has entered the setting state.
- Press a button (e.g., button A) on the remote control once. The LED indicator on the receiver will flash and then turn off.
- The Time Delay Mode is now successfully set.
Note: All operating modes require the use of a QIACHIP remote control (transmitter) and controller (receiver/wireless remote switch) to function. Compatibility with remote controls from other brands is not guaranteed.
7. Application Scenarios

8. Maintenance
- Keep the device clean and dry. Avoid exposure to dust, dirt, and liquids.
- Do not attempt to open or repair the device yourself. Refer to qualified personnel for service.
- Replace the remote control battery (CR2032) when its range decreases or it stops responding.
9. Troubleshooting
- Device not responding: Check power connections to the receiver. Ensure the remote control battery is not depleted. Verify that the remote is paired correctly (try re-learning the code).
- Short remote range: Replace the remote control battery. Ensure there are no major obstructions or sources of interference between the remote and receiver.
- Incorrect operating mode: Re-program the receiver to the desired operating mode following the instructions in Section 6.
10. User Tips
- Multiple Remote Controls: The receiver can store multiple remote controls in its memory. To add more, simply repeat the 'Learning the Code' steps for each additional remote. The exact number of remotes it can store is not specified but typically ranges from 10 to 20.
- Power Input/Output: The receiver can be installed with a 12V input and provide a 12V output for the load, making it suitable for applications like controlling a marine horn (Bozina Maritima) or other 12V devices. The input voltage for the receiver (V+/V-) can be different from the voltage of the load connected to COM/NO/NC, as long as the load voltage is within the relay's switching capacity.
11. Warranty and Support
For warranty information or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
12. Certifications
This product is certified with CE, FCC, and RoHS, ensuring compliance with relevant safety, health, and environmental protection standards.
13. Additional Resources
A comprehensive user manual in PDF format is available for download. You can access it via this link: QIACHIP Receiver Instruction Manual (PDF)