4-Channel 433MHz Relay Module – Control up to 4 devices with one remote
Looking to control your gate, roller shutter, and lighting system wirelessly from a single point? With this 4-channel relay module and the two included remotes, you can automate up to 4 independent circuits with ease—no electrician or extra purchases required. This 433MHz relay kit arrives ready to use, containing everything you need to get started.
Note: The package includes the 4-relay receiver module and two 4-button remotes. Requires 12V DC power supply — not included.
Why choose this model? (Key Benefits):
- Complete kit, no surprises — Includes the receiver module and 2 remotes in one package with no hidden costs.
- 4 fully independent channels — Simultaneously control a gate, roller shutter, pump, and lighting, each assigned to its own button.
- 3 programmable operating modes — Momentary, ON/OFF (Toggle), and Latched, adaptable to any type of electrical load.
- Switching power up to 2000W — Directly operate motors, pumps, or actuators without needing additional external relays.
- -105 dBM sensitivity — Stable reception even through walls or at long distances from the receiver.
- Temperature range -20°C to +80°C — Reliable performance in outdoor winter conditions or unheated industrial spaces.
- Self-learning programming — Pair a new remote in seconds without the need for special equipment.
Performance and Specifications
The receiver operates on the 433.92 MHz frequency with ASK modulation, making it compatible with most standard remotes on the market. The self-learning code technology eliminates the need for manual dipswitch configurations—simply pair your remote on the fly. With a static current of 8.5 mA, standby power consumption is kept to a minimum, and the 4 relay outputs can be configured individually or in pairs via 2CH modes for more complex automation scenarios.
| Parameter | Value / Detail |
|---|---|
| Supply Voltage | 12V DC |
| Operating Frequency | 433.92 MHz |
| Signal Modulation | ASK |
| Coding Method | Self-learning code |
| Number of Channels | 4 independent channels |
| Operating Modes | Momentary / ON-OFF / Latched / 2CH |
| Static Current | 8.5 mA |
| Max Switching Power | 2000W |
| Reception Sensitivity | -105 dBM |
| Operating Temperature | -20°C ~ +80°C |
| Remotes Included | 2 units (4 buttons each) |
Programming and Usage Instructions
- Connect the module to a 12V DC power supply and wait for the LED to remain lit steadily.
- Press the button on the board eight times to perform a full system reset — a series of flashes will confirm the reset.
- Wait for the LED to stabilize. Do not operate the remote during this time.
- Select your desired mode by pressing the board button the corresponding number of times, then press the desired button on the remote when the LED lights up brightly:
- Momentary: 1 press — the relay is active only while the button is held down.
- ON/OFF (Toggle): 2 presses — one press turns it on, the next turns it off.
- Latched: 3 presses — the relay remains in the last set position.
- 2CH Mode 1+2: 4 presses — simultaneous activation of channels 1 and 2.
- 2CH Mode 1+3: 5 presses — simultaneous activation of channels 1 and 3.
- 2CH Mode 2+3: 6 presses — simultaneous activation of channels 2 and 3.
- 2CH Mode 3+3: 7 presses — special double channel 3 configuration.
- Full RESET: 8 presses — clears all settings and memorized remotes.
Package Contents
- 1x RF receiver module with 4 independent relays (12V DC)
- 2x 4-button remote controls (433.92 MHz)
Frequently Asked Questions
Can I add more remotes to the same module?
Yes. Using the self-learning procedure, you can pair as many 433.92 MHz ASK-compatible remotes as you need. Repeat the programming steps for each new remote without performing a reset in between.
What is the practical difference between Momentary, ON/OFF, and Latched?
Momentary is useful for doorbells or temporary triggers — the relay is active only while you hold the button. ON/OFF works like a standard light switch — one press to turn on, another to turn off. Latched maintains the state regardless of how many times you press — ideal for motors with their own limit switches.
Does it work with existing gate or garage door automation?
Generally yes, provided the existing system accepts relay commands and operates at 12V. Please verify the supply voltage and signal type accepted by your controller before installation.
Is the 12V power supply included?
No. The package contains only the receiver module and the 2 remotes. A 12V DC power supply must be purchased separately.
Can it be mounted outdoors or in extreme temperatures?
Yes. It supports temperatures between -20°C and +80°C, making it suitable for cold winters and warm industrial environments. Please protect it from direct moisture or install it in a weatherproof enclosure if exposed to the elements.
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