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SYN115 433 Transmitter
One wire, one 433 MHz burst
Page 57 soft-modulates 433 MHz ASK on GPIO38: built-in code formats (EV1527 / PT2262 style) plus a manual 24-bit code field.
The screen shows the format, how many frames were sent and the last bit stream, so you can compare against the receiver.
Screen
On-screen interface
A recreation of this page on the 2.41-inch AMOLED display (600 Γ 450). Actual interaction and layout follow the latest firmware.
Sent3frames Β· 433.92 MHz
FormatEV1527 Β· 24-bit
Code0xA3C51E
PinGPIO 38
Health92
TX only β receive on p.58
Screen Β· Page 57
May differ from the actual interface; the screen of the real device is the final reference.
Highlights
Key capabilities
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Several formats
EV1527 / PT2262 / raw bit stream.
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24-bit custom
Type a hex code directly.
π
Repeat
Sends several frames for reliability.
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Health score
Pin level and send counter.
Specifications
Technical specs
PinGPIO 38
Frequency433.92 MHz (module)
ModulationASK/OOK, software timed
Firmware pagePage 57
Use Cases
Typical scenarios
Remote control
Drive garage doors and 433 sockets.
Protocol study
Reproduce a frame captured on page 58.
Commands
Related commands
page 57 Open the SYN115 page tx <code> Send one frame in the current format
β Boundaries & notes
- Transmit only β pair with the SYN480R on page 58 to receive.
- Antenna length sets range; about 17 cm matches 433 MHz.
- Vendors disagree on code layouts β capture the original remote first.
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