433MHz 30A Wireless Remote Control Switch AC 75V–220V Relay

Take Full Control – From Up to 100 Metres Away

The 433MHz 30A Wireless Remote Control Switch lets you turn on or off water pumps, motors, LED lights, fans, and other electrical appliances without touching a single wire — just point and click. With a compact relay receiver and easy-to-pair transmitter, this is the no-fuss solution for remote-controlling almost any AC or DC load in your home, workshop, garden, or farm.

Made in Mainland China.

Key Features

• Wide Voltage Compatibility: Receiver operates on AC 75V–240V; a separate DC 9–72V variant is also available for low-voltage DC applications.
• 30A Peak / 15A Rated: The relay is marked 30A 240VAC for peak load. For safe, continuous operation, keep your load current under 15A.
• Long Range: Up to 100 metres in open field — ideal for outdoor pumps, gates, and barn lighting.
• 6 Programmable Modes: Momentary, Toggle, Latched, and three selectable Delay modes (5s, 10s, 15s) — set the mode in seconds with the onboard learning button.
• Learning Code Technology: Pair any compatible 433MHz transmitter quickly; clear all codes with an 8-second button hold.
• Audible Confirmation: The switch produces a "TI TA" click sound every time the remote is pressed, so you always know it received the signal.
• Compact & Enclosed: Receiver box measures just 65 × 45 × 28 mm — fits neatly into enclosures or junction boxes.

Specifications at a Glance

Remote Control Transmitter

• Operating Voltage: DC 12V (23A/12V battery × 1)
• Transmitting Frequency: 433 MHz
• Encoding Type: Fixed code
• Receiver Sensitivity: > −105 dB
• Transmission Distance: Up to 100 m (open field)
• Size: approx. 55 × 28 × 10 mm

Receiver Board

• Operating Voltage: AC 75V–240V
• Output Voltage: Same as operating voltage
• Operating Frequency: 433 MHz
• Encoding Type: Learning code (also compatible with extra 315 MHz remote controllers)
• Rated Relay Contact Current: 15A / 240VAC & 15A / 110VAC (30A is peak only)
• Box Size: approx. 65 × 45 × 28 mm

How to Set the Operating Mode (Learning Method)

1. Momentary: Press Learning Button 1× → LED flashes 1×. Press transmitter → LED flashes 3×. Done.
2. Toggle: Press Learning Button 2× → LED flashes 2×. Press transmitter → LED flashes 3×. Done.
3. Latched: Press Learning Button 3× → LED flashes 3×. Press transmitter → LED flashes 3×. Done.
4. Delay 5s: Press Learning Button 4× → LED flashes 4×. Press transmitter → LED flashes 3×. Done.
5. Delay 10s: Press Learning Button 5× → LED flashes 5×. Press transmitter → LED flashes 3×. Done.
6. Delay 15s: Press Learning Button 6× → LED flashes 6×. Press transmitter → LED flashes 3×. Done.

To Clear All Codes: Hold the Learning Button for 8 seconds until the LED flashes 3 times and turns off.

Common Applications

• Garden & irrigation water pumps
• Electric motors & fans
• LED strips, bulbs & outdoor lighting
• Garage doors, gates & shutters
• Workshop machinery & power tools (within rated current)

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Safety & Standards Reference

When installing this relay switch, always follow safe electrical wiring practices and ensure your load does not exceed the 15A rated contact current. For guidance on electrical safety standards and product compliance, refer to the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Remote control

Frequently Asked Questions

Q: What is the maximum continuous current I can run through this 433MHz relay switch?

A: While the relay is labelled 30A 240VAC, that figure refers to the peak or inrush current. For safe, continuous operation, your load's rated current must remain below 15A (at either 240VAC or 110VAC). Exceeding this may damage the relay and create a safety hazard.

Q: Can I pair multiple transmitters to one receiver, or use one transmitter with multiple receivers?

A: Yes. Because the receiver uses learning code technology, you can pair multiple 433MHz transmitters to a single receiver. You can also use one transmitter to control several receivers simultaneously, making it perfect for whole-room or multi-device setups.

Q: What's the difference between Momentary, Toggle, and Latched modes on this wireless remote control switch?

A: Momentary means the relay is only ON while you hold the button. Toggle switches the output ON with one press and OFF with the next. Latched keeps the relay ON after a single press and requires a second press to turn it OFF — similar to toggle but with a firmer lock-on behaviour. Choose the mode that best suits your appliance (e.g., use Momentary for short-burst tasks, Toggle or Latched for pumps and lights that need to stay on).

Q: What voltage does the transmitter battery use, and where can I get a replacement?

A: The transmitter runs on a single 23A 12V battery (also known as MN21 or A23). These small cylindrical batteries are widely available at electronics stores, hardware shops, and online retailers.

Q: Is this wireless relay switch suitable for outdoor use?

A: The receiver module itself is housed in a compact enclosure but is not rated for direct outdoor exposure. If you plan to install it outdoors (e.g., to control a garden water pump), please place the receiver inside a weatherproof electrical enclosure (IP65 or better) to protect it from moisture and dust.