Lifepak 20 is a Defibrillator manufactured by Medtronic.
Medtronic Lifepak 20 Defibrillator - User Manual
LIFEPAK 20 LIFEPAK 20e Defibrillator/Monitor with ADAPTIVT Biphasic Technology Service Manual
LIFEPAK 20 DEFIBRILLATOR / MONITOR OPERATING INSTRUCTIONS