The Philips HeartStart OnSite AED (M5066A) is a semi-automatic defibrillator designed for use by bystanders and lay responders with little or no training. At 3.3 lbs with pre-installed SMART Pads and a pull-handle activation that immediately begins step-by-step voice guidance, it is the most widely deployed public-access AED in the United States. Delivers 150 J SMART Biphasic Therapy; optional pediatric pads for patients under 8 years or 55 lbs. Key Specifications Specification Detail Manufacturer Philips Model / SKU M5066A (MED-TAC SKU: M5066A_C01) Dimensions 2.8 × 7.4 × 8.3 in (7.2 × 19 × 21 cm) D × H × W Weight (with battery & pads) 3.3 lbs (1.5 kg) Waveform SMART Truncated Exponential Biphasic Adult Shock Energy 150 J nominal (32 A peak current into 50 Ω) Pediatric Shock Energy 50 J nominal (with optional M5072A Infant/Child pads) Quick Shock Shock delivery within ~8 seconds after CPR interval Battery Capacity Min. 200 shocks or 4 hours operating time; 4-year standby IP Rating IP2X (solid objects) / IPX1 (drip-proof) Drop Resistance 1 meter drop to any edge, corner, or surface Self-Tests Automatic daily, weekly, and monthly (85 total tests) Operating Temp 0°C to 50°C (32°F to 122°F) Warranty 8-year AED / 4-year battery Product Overview The Philips HeartStart OnSite is the most widely recognized public-access AED in the United States, designed specifically for environments where trained medical personnel are not immediately available. Offices, schools, gyms, retail spaces, houses of worship, and sports venues benefit most from the OnSite's signature "virtually ready" design: the device comes pre-configured with battery and SMART Pads installed, requiring only the pull of the green handle to activate and begin guided rescue. The OnSite's SMART Analysis technology continuously analyzes the victim's cardiac rhythm and withholds shock advice unless a shockable rhythm — ventricular fibrillation or pulseless ventricular tachycardia — is detected. Voice instructions adapt in real time to the rescuer's actions: the system does not advance to the next step until the current one is complete, and repeats and rephrases instructions if the rescuer pauses. An audible metronome guides CPR rate, and verbal feedback guides compression depth. The SMART Pads integrate with the device to provide bidirectional feedback. When pads are placed correctly, they signal the device to adapt its prompts to the rescuer's pace and confirm heart rhythm assessment before advising treatment. The cartridge-based pad system protects the adhesive gel from drying out and provides a use-by date indicator. The device runs 85 automatic self-tests daily, weekly, and monthly — including pad integrity and battery capacity — and emits an audible chirp if any component requires attention. See also: Full AED & Resuscitation Collection | Philips HeartStart FRx (Rugged/BLS) | TacMed Stop the Bleed® AED Kit 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.
