๐ ๏ธ MAKER GUIDEJun 05, 2026โขโฑ๏ธ 1 min readโข๐ณ๐ต Tested in Nepal
Long-Range 433MHz 2-Channel RF Remote Control Switch for Heavy Appliances
Wire and configure 2-channel 433MHz wireless RF transmitter and receiver modules with 220V relay switching to control appliances up to 100 meters away.
๐ ๏ธ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
Curated components verified for this project. Check the items you need, adjust quantities, and add straight to cart:
Estimated Total (4/4 items):
NPRย 1,830
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All parts selected
NPRย 220
NPRย 750
NPRย 260
NPRย 600
Long-Range 433MHz 2-Channel RF Remote Control Switch for Heavy Appliances
Control workshop machinery and lights through concrete walls using the 433MHz RF Transmitter and Receiver Kit, Arduino Nano, and a 2-Channel Optocoupled 5V Relay Board.
Hardware Bill of Materials:
- RF Module Kit: 433MHz RF Transmitter and Receiver Module Kit
- Microcontroller: Arduino Nano V3.0 Solderless
- Relay Module: 2 Channel 5V 10A Relay Module low level trigger with optocoupler
- Power Module: HLK-PM01 AC-DC 220V to 5V mini power supply module
Circuit Pinout & Wiring Connections:
| 433MHz Receiver Pin | Arduino Nano Pin | Function / Description |
|---|---|---|
| Receiver VCC / GND | 5V / GND | RF Receiver Power |
| Receiver DATA | Pin D2 (VirtualWire / RadioHead RX) | 433MHz Demodulated Data Stream |
| 2-Ch Relay IN1 | Pin D7 | Channel 1 Appliance Relay |
| 2-Ch Relay IN2 | Pin D8 | Channel 2 Appliance Relay |
| HLK-PM01 +5V / GND | Nano 5V & GND | AC-to-DC Isolated Logic Power |
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