433MHz 1-Button 1-Channel RF Remote Transmitter 12V
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Prices updated: 13 Oct 2026
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About this product
A 433 MHz single-button, single-channel RF remote transmitter rated at 12 V. It sends a coded radio signal to a matching 433 MHz receiver and is commonly used to switch a relay, gate, door or lighting circuit remotely. The receiver must share the same frequency and encoding to respond.
Specifications
- Frequency
- 433 MHz
- Number of buttons
- 1
- Number of channels
- 1
- Operating voltage
- 12 V
Frequently asked questions
Does it work without a receiver?
No. It is a transmitter only, so it needs a 433 MHz receiver with matching frequency and encoding to act on the signal.
What voltage does it need?
The listing specifies a 12 V supply. Check the transmitter label and the receiver specifications before wiring the system.
