Title: Transmitting Signals
Description: Send captured or universal IR commands
URL: /latest/infrared/transmitting/
Version: latest
Section: Infrared
Search index: /search-index.json

# Transmitting Signals

> Send captured or universal IR commands

## On this page

- [Send a Saved Command](#send-a-saved-command)
- [Universal Libraries](#universal-libraries)
- [Tips](#tips)
- [CLI Support](#cli-support)
- [Listing and Inspecting](#listing-and-inspecting)
- [Sending from File](#sending-from-file)
- [Universal Libraries](#universal-libraries-1)
- [Receiving and Pin Override](#receiving-and-pin-override)
- [Inline Sending](#inline-sending)

---

## Send a Saved Command
- Open Infrared and browse Remotes to see saved .ir files.
- Pick a Flipper-compatible .ir file. GhostESP parses the sections inside the file and lists every named button.
- Tap a button entry to transmit. The configured LED should flash purple if not in stealth mode.
Tip: If you see “No .ir files” in the Remotes or Universals lists, try reinserting your SD card and rebooting the device. Ensure the /mnt/ghostesp/infrared/remotes and /mnt/ghostesp/infrared/universals folders exist on the card.
What happens when you send
1
Parse the .ir fileProtocol fields, or raw timing data plus its carrier and duty cycle
2
Select the signalBy named button, or by index from `ir list`
3
Transmit over RMTCarrier frequency and duty come from the file for raw signals
4
LED feedbackFlashes purple unless stealth mode is on
### Universal Libraries
- Universal .ir packs live under /mnt/ghostesp/infrared/universals and contain large collections of commands grouped by device.
- When you open a universal file, GhostESP scans the command list and prompts you to pick a specific button to send.
- Parsing very large libraries (for example, community dumps) can take several seconds; wait for the list to finish populating before selecting.
- You can find supported universals at [Momentum Flipper Firmware](https://github.com/Next-Flip/Momentum-Firmware/tree/dev/applications/main/infrared/resources/infrared/assets). Download and place the files under infrared/universals.
GhostESP also includes a built-in Universal IR file with popular TV POWER signals - see [Infrared Files](/latest/infrared/files/) for details.
### Tips
- Aim the LED directly at the target’s receiver window.
- If nothing happens, close the popup, verify you chose the right protocol (raw vs decoded), and relearn the button or test another signal.
- Ensure no bright sunlight hits the receiver; ambient infrared noise can reduce range.
## CLI Support
You can list, inspect and transmit signals using the CLI, which is useful for scripting or automation.
### Listing and Inspecting
# List .ir/.json files in the remote directory (or a given path)
ir list [path]
# Show the buttons in a file, or use a remote index printed by `ir list`
ir show <path|remote_index>
# List universal library files; -all also dumps the built-in signals
ir universals list [-all]
### Sending from File
Use ir send to transmit a signal from an existing .ir file. The first argument may be a path or a remote index from ir list (indices are only valid right after ir list):
# Send the first signal in the file
ir send /mnt/ghostesp/infrared/remotes/TV.ir
# Send the 3rd signal (index 2)
ir send /mnt/ghostesp/infrared/remotes/TV.ir 2
# Using a remote index from `ir list`, then a button index
ir list
ir send 0 1
### Universal Libraries
# Send a built-in universal signal by index
ir universals send <index>
### Receiving and Pin Override
# Capture incoming IR into the log for inspection (timeout in seconds, default 60)
ir rx [timeout]
# Show the current TX/RX pins and whether they are overridden
irpin
# Override a pin; -1 clears the override and uses the board default
irpin tx <pin|-1>
irpin rx <pin|-1>
### Inline Sending
You can send raw or parsed signals directly without a file using the inline mode markers. This is useful for sending commands from a script or external tool.
Text Format:
[IR/BEGIN]
name: Power
type: parsed
protocol: NEC
address: 00 FF
command: 18 E7
[IR/CLOSE]
JSON Format:
[IR/BEGIN]
{"type":"parsed","protocol":"NEC","address":255,"command":6375}
[IR/CLOSE]
Note: In the text format, address and command bytes are listed in MSB-first order and parsed LSB-first. 00 FF produces address 0x00FF (255), and 18 E7 produces command 0x18E7 (6375).
See the [CLI Reference](/latest/getting-started/command-line-reference/#infrared) for full command details.