Description
433 MHz RF Transmitter and Receiver Module Set
This low-cost wireless pair includes an MX-05V receiver and an MX-FS-03V transmitter for basic microcontroller and electronics experiments. A transmitter and receiver do not automatically form a complete communication system: the host devices must use compatible encoding, timing and data handling.
📥 MX-05V receiver — listed specifications
- Supply: 5 V DC
- Quiescent current: 4 mA
- Receiving frequency: 433.92 MHz
- Listed sensitivity: −105 dBm (the French source writes “−105 DB”; receiver sensitivity is normally specified in dBm)
- Dimensions: 30 × 14 × 7 mm
- A receiver antenna may be needed for useful range; antenna layout and placement affect reception
📤 MX-FS-03V transmitter — listed specifications
- Operating voltage: 3.5–12 V
- Nominal frequency: 433 MHz
- Operating mode listed: AM; this simple module is commonly used with ASK/OOK-style data signaling
- Listed transmit power: 10 mW
- Dimensions: 19 × 19 mm
- Data rate stated by the listing: 4 KB/s; confirm the unit and usable throughput with the actual board and software
- Seller-stated range: 20–200 m depending on supply voltage; this is not a guaranteed range
⚙️ Wiring and data
Check the pin labels and the documentation for each board before wiring; do not assume the pin order is identical between transmitter and receiver. Use the correct supply voltage for each module and a shared ground with the controller. The host microcontroller must encode and decode the data; use a compatible library or protocol at both ends.
A suitable antenna, its length and orientation, supply noise, nearby interference, obstacles and receiver sensitivity can strongly affect range and reliability. The 20–200 m figure is a seller claim under unspecified test conditions; expect a shorter or different range in real installations.
This basic RF link does not by itself provide encryption, authentication or interference resistance. Do not use it as the sole control for a safety-critical device, secure access system or other high-consequence application. Check local radio-equipment requirements before operating a transmitter.
💡 Example uses
- Learning and short-range wireless experiments
- Sending simple sensor or switch states between microcontrollers
- Prototyping remote-control and home-automation ideas
- Testing basic RF transmit/receive coding with suitable software
