ACR ResQLink 400 GPS Personal Locator Beacon vs Medistrom Pilot-24 Lite CPAP Battery Backup Power Supply, 95Wh, for ResMed AirSense 10, AirMini, S9, and compatible 24V CPAP/APAP devices (bundled with cables)
Head-to-head spec comparison to help you pick the right kit component for your needs.
ACR
$300
Medistrom
$339
Spec-by-Spec Comparison
| Spec | ACR ResQLink 400 GPS Personal Locator Beacon | Medistrom Pilot-24 Lite CPAP Battery Backup Power Supply, 95Wh, for ResMed AirSense 10, AirMini, S9, and compatible 24V CPAP/APAP devices (bundled with cables) |
|---|---|---|
| Kit Role | SOS beacon | Dedicated CPAP battery backup: seamless UPS-style failover for ResMed and compatible CPAP/APAP machines without relying on the main power station |
| Category | satellite | cpap-battery |
| Renter Install | no install | no install |
| Building Fit | evacuation | bedside |
| Max Power | N/A | N/A |
| Channels | N/A | N/A |
| Clear LOS Range | N/A | N/A |
| Coverage | N/A | N/A |
| Battery Life | 24 hrs | 8 hrs |
| Water Resistant | Yes | No |
| SOS Button | Yes | No |
| Weather Alerts | No | No |
| License Required | No | No |
| Subscription Required | No | No |
| Subscription/mo | 0 $ | 0 $ |
| Price | $300 | $339 |
| Rating | 8.0/10 | 8.0/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
ACR ResQLink 400 GPS Personal Locator Beacon
Pros
- No monthly subscription
- True emergency beacon path outside consumer cell networks
- Long shelf-life battery
- Waterproof and rugged
- Useful for flood, coastal, and evacuation scenarios
Cons
- Not a messaging device
- Activation is for real rescue emergencies only
- No routine family updates
- Overkill for ordinary apartment power outages
Medistrom Pilot-24 Lite CPAP Battery Backup Power Supply, 95Wh, for ResMed AirSense 10, AirMini, S9, and compatible 24V CPAP/APAP devices (bundled with cables)
Pros
- Seamless UPS-mode failover: the Pilot-24 Lite passes AC power through to the CPAP normally and switches to battery in milliseconds on power loss — no buttons, no action required from a sleeping user
- 8–16 hours runtime at typical CPAP pressures (up to 10 cmH2O), covering a full night in most outage scenarios
- Purpose-built for ResMed AirSense 10, AirMini, and S9 with included cables — no adapters to buy or guess at
- TSA-approved / FAA-compliant 95Wh battery: also travels with the CPAP user
- Recharges in 2–3 hours; lighter (1.3 lb) and smaller than a general-purpose power station
Cons
- Works only with compatible 24V CPAP/APAP devices — not universal; verify CPAP model before buying
- At $339 it is expensive per watt-hour versus a general power station, but the pass-through UPS function justifies the premium for CPAP-critical use
- 95Wh is not enough to run other devices simultaneously — single-purpose
- Not compatible with ventilator BiPAP or high-flow oxygen concentrators
Our Verdicts
ACR ResQLink 400 GPS Personal Locator Beacon
The ResQLink 400 is not a chat device. It is the no-subscription rescue beacon for evacuation or flood-risk households that want one serious emergency trigger without maintaining a monthly satellite plan.
Medistrom Pilot-24 Lite CPAP Battery Backup Power Supply, 95Wh, for ResMed AirSense 10, AirMini, S9, and compatible 24V CPAP/APAP devices (bundled with cables)
The Pilot-24 Lite is the best secondary layer for a CPAP user who wants guaranteed overnight coverage without relying solely on the larger DELTA 2: it sits invisibly in-line with the CPAP, passes power through when the grid is live, and switches to battery the moment power fails — with zero intervention needed from a sleeping elderly parent. Pairing it with the DELTA 2 provides belt-and-suspenders CPAP coverage: the Pilot-24 handles the first 8–16 hours autonomously while the DELTA 2 holds capacity for everything else in the room.
Medistrom Pilot-24 Lite CPAP Battery Backup Power Supply, 95Wh, for ResMed AirSense 10, AirMini, S9, and compatible 24V CPAP/APAP devices (bundled with cables)
$339