The Defibtech Lifeline ARM XR (RMU-2000) Automated Chest Compression Device delivers AHA/ERC-compliant CPR at 100–110 compressions per minute with 1.5–2.4 inch adjustable depth and up to 0.6 inch active chest recoil. Weighing 16.4 lb with battery and assembling to 25 × 20 × 9 in, it provides 60 minutes of continuous operation from a single 18V 5600mAh lithium-ion battery — purpose-built for EMS crews and ER teams requiring consistent mechanical CPR.
Key Specifications
| Specification | Detail |
|---|---|
| Manufacturer | Defibtech |
| SKU | DFTRCF-A2000EN |
| Model | RMU-2000 (Lifeline ARM XR) |
| Compression Frequency | 100–110 ±1 compressions per minute |
| Compression Depth Range | 1.5 to 2.4 inches (38–60 mm) ±0.1 in; target 1.8–2.2 in auto-adjusted by AP diameter |
| Duty Cycle | 50% ±5% |
| Active Chest Recoil | Up to 0.6 in (1.5 cm) suction cup piston design |
| Compression Modes | Continuous; Protocol (30:2 with 3-second ventilation pause) |
| Assembled Size | 25 × 20 × 9 in (63.5 × 50.8 × 22.9 cm) |
| Carrying Case Size | 21 × 19 × 11 in (53.3 × 48.3 × 28.0 cm) |
| Weight (with battery) | 16.4 lb (7.5 kg) |
| Battery | 18V, 5600 mAh lithium-ion (rechargeable) — 1 hour operation |
| Battery Charge Time | <3 hours in device; <2 hours external charging |
| Patient Chest Width Max | 17.5 in (44.4 cm) maximum |
| Patient Chest Height | 7.4 to 12.7 in (18.8 to 32.3 cm) |
| Patient Weight Restriction | None — device not restricted by patient weight |
| IP Rating | IP44 |
| Operating Temperature | 0 to 40°C (32 to 104°F) |
What's Included
- Lifeline ARM XR compression module
- Frame
- Battery pack (18V 5600 mAh lithium-ion)
- Backpack carry case
- Suction cup piston
- Stabilization strap
- Wrist straps (1 set of 2)
- Power module charger
- Backboard
Product Overview
Manual CPR quality degrades rapidly with rescuer fatigue — studies demonstrate significant decline in compression depth and rate within 2 minutes of sustained CPR. For EMS crews managing a cardiac arrest patient through extended extrication, prolonged ground transport, or helicopter evacuation, sustaining high-quality manual CPR is physiologically challenging. The Lifeline ARM XR removes this limitation by delivering consistent, guideline-compliant mechanical compressions that do not degrade over time.
The ARM XR's compression depth is not fixed — it automatically determines target depth (1.8–2.2 inches) based on the patient's anterior-posterior chest diameter, measured from piston position. This patient-adaptive approach ensures appropriate compression for both smaller and larger adults within the device's chest height range (7.4–12.7 in), without manual adjustment by the operator. The suction cup piston design generates active chest recoil up to 0.6 inch — facilitating cardiac filling between compressions, a physiologically important property for maintaining coronary perfusion pressure.
Two compression modes allow protocol flexibility: continuous mode for uninterrupted compressions during asynchronous ventilation, and protocol mode (30:2) with a 3-second ventilation pause and audio cue before each 2-breath sequence. At 16.4 lb in a backpack carry case measuring 21 × 19 × 11 in, the ARM XR is deployable in ambulances, emergency departments, and helicopter EMS operations where weight and space constraints must be balanced against performance requirements.
See also: AED & Resuscitation Devices | IFAK Kits & First Aid
All products sourced from the actual brand manufacturer or authorized master distributors. CoTCCC recommendation status verified where applicable. Ships from MED-TAC International, Pembroke Pines, FL — clinician-founded, veteran-led, SDVOSB-certified.
| Specification | Value |
|---|---|
| Weight | 16.4 lbs. |
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