RX overview

The RX is the half of the system that does the recording-side work. It pairs with up to four TX buttons over Bluetooth 5.2 LE, converts each press into a brief marker tone on its 3.5mm TRS output, and writes a parallel set of tracks to a microSD card so you have a backup independent of the camera.

Where it lives

The RX is small enough to live in three places without getting in the way:

• On a camera cold-shoe, with the included clip, output cable into the camera's 3.5mm audio input.
• In a sound mixer bag, output into a recorder's line input.
• On a timecode pack (e.g. Tentacle, Deity), sharing the same audio line.

Most setups put the RX as close as practical to whatever's recording the audio that gets used in post.

Outputs

The RX outputs simultaneously to two places:

• 3.5mm TRS — line-level stereo, ±24 dB output gain. Marker tones live here at the moment a TX is pressed.
• microSD card — two synchronized WAV files per take. A SCRATCH track (clean reference audio with BWF/BEXT timecode metadata) and a MARKS track (multi-channel: RX button + four TX channels). microSD slot accepts FAT32-formatted cards up to 32 GB; 12+ hours of recording fit on an 8 GB card.

Inputs

• 3.5mm TRS (input mode) — feeds external SMPTE LTC into the RX for jam-sync.
• USB-C — charging only. No data transfer over USB; SD card is the data path.
• Onboard digital scratch microphone — captures the room as a sync reference for cases where you don't have an external audio chain.

Status indicators

• 6 × RGB LEDs — power, pair status, channel-active indicators (one per TX slot), record state.
• 128 × 32 OLED display — shows current timecode, paired-TX count, battery, and menu navigation.

For exact LED color meanings, see Buttons & LED reference.

Power

12+ hours of continuous use on a single charge. Self-latching power circuit, so the unit draws no current when off — pick it up after a month off the shelf and it works.