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CPAP Clarity

BMC Medical · RESmart E-20A · G3 A20

See your full BMC therapy data

CPAP Clarity reads the SD card from your BMC RESmart E-20A or G3 A20 and shows you what the iCode summary leaves out: obstructive vs central apnea breakdown, the per-second pressure curve, leak, respiratory rate and volume, and your actual machine settings.

Import your BMC data

What CPAP Clarity shows you

AHI Breakdown
OA / CA / H

Both BMC machines record obstructive apneas, central apneas, and hypopneas as separate events with timestamps. CPAP Clarity shows each count, not just the single AHI number on the device screen.

Pressure Curve
Per second

The therapy pressure the auto algorithm chose, one reading every second across the night. The card also holds a separate exhale value, which CPAP Clarity does not chart today.

Leak Analysis
L/min, per second

Mask seal in liters per minute, sampled every second. CPAP Clarity flags elevated-leak nights and shows the trend over time.

Respiratory Rate & Volume
RR, TV, MV

Breathing rate, tidal volume, and minute ventilation, recorded per second by the BMC firmware. A channel set the same-platform Luna G3 firmware does not expose.

Breathing
Rate, volume, minute

Respiratory rate, tidal volume and minute ventilation, all charted through the night. These are channels many machines in this bracket never write to the card at all.

Machine Settings
Mode, pressure, Reslex

Your BMC machine records its mode, pressure range, Reslex level, ramp, humidity, mask type, and tube type. CPAP Clarity reads them directly from the SD card.

Usage Tracking
Hours / Compliance

Nightly usage hours, 30-day compliance rate, consistency scoring, and weekend vs weekday patterns, far beyond the iCode summary numbers.

OSCAR-Calibrated
Real contributor data

BMC numbers in CPAP Clarity were calibrated and cross-checked against OSCAR on real E-20A and G3 A20 contributor cards, with the byte-level format documented in our validation notes.

How to import your data

1

Remove the SD card

Power the machine off. E-20A: the slot is on the end opposite the humidifier, by the DC inlet and filter cap. G3 A20: slide the water chamber off; the slot is next to the transfer box. Push the card to release it.

2

Insert into your computer

Plug the SD card into a USB card reader connected to your computer. You should see the card's data files appear.

3

Drop the folder on CPAP Clarity

Open CPAP Clarity, go to the import page, and drag the entire SD card folder onto the drop zone. CPAP Clarity reads everything automatically.

Go to import page

Frequently Asked Questions

Which BMC machines does CPAP Clarity support?

The BMC RESmart GII E-20A and the BMC G3 A20, both auto-CPAP machines (4 to 20 hPa, adjustable in 0.5 steps). They share a byte-compatible SD card format, so one parser reads both, calibrated on real contributor data from each. If you have a different BMC model and its card reads oddly, tell us through the feedback page.

Where is the SD card slot on my BMC machine?

It depends on the model, and they differ. On the RESmart E-20A, the slot is on the end opposite the humidifier, on the same panel as the DC inlet and filter cap. On the G3 A20, the slot is on the humidifier side: press the water chamber down and slide it off, and the slot is next to the transfer box where the chamber connects. Power the machine off before removing the card.

What do the BMC machines record on the SD card?

Per-second therapy data, plus event records for obstructive apneas, central apneas and hypopneas with timestamps, and your machine settings. CPAP Clarity charts pressure, leak, respiratory rate, tidal volume and minute ventilation. Two things the card holds are decoded but NOT charted today: the separate exhale pressure and the inhale-to-exhale ratio. There is no Cheyne-Stokes detection in this format, and we have not found a flow limitation or snore channel in it either.

What is Reslex?

Reslex is BMC's exhale pressure relief: the machine drops pressure slightly at the start of exhalation and restores it for the next inhale, making breathing out feel more natural. Your home care provider sets the level, and CPAP Clarity reads that level off the card so you can confirm what you are actually set to.

What about iCode and the PAP Link app?

The device screen shows iCode and iCode QR+ codes, which encode a compliance summary your provider can decode, and BMC's PAP Link app shows usage and summary numbers. Neither shows the per-second pressure, leak, and respiratory data or the per-event detail; that lives on the SD card, which is what CPAP Clarity reads in your browser.

Is the BMC G3 A20 the same machine as the Luna G3?

Same hardware platform, different branding and firmware generations. The G3 A20 is sold under the BMC brand internationally (the UK through suppliers like Intus Healthcare, plus EU and Australian distributors); in the US the platform is sold as the React Health Luna G3. The firmware data formats differ, so CPAP Clarity carries separate parsers, and the BMC-firmware cards actually expose more channels (respiratory rate, tidal volume, minute ventilation) than the newer Luna G3 firmware does.

My machine came without an SD card. What do I do?

BMC lists the SD card as optional in the box. Any standard full-size SD card works once the machine formats it; insert it and the device records to it automatically from then on. Nights before the card was inserted are not recoverable from the machine.

Is my data safe?

All processing happens in your browser. Your CPAP data never leaves your computer and is never uploaded to any server. CPAP Clarity stores your data in your browser's local storage so you can return to it later without re-importing.

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