Product: Philips HeartStart MRx Monitor/Defibrillators
Units Affected: MRx units with a serial number within the following ranges:
-Model M3535A: US00100100 to US00578696
-Model M3536A: US00100902 to US00576650
-Model M3536J: US00209838 to US00332675
-Model M3536M: US00500002 to US00553553
-Model M3536MC: US00500001 to US00500087
-Model M3536M2: US00554176, US00554177, US00554178
-Model M3536M4: US00500003 to US00574869
-Model M3536M5: US00500001 to US00562935
-Model M3536M6: US00554358 to US00576619