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Omron ReliOn HEM-741CREL Instruction Manual: Specifications

Automatic inflation blood pressure monitor.
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Measurement Range:
Rapid Air Release:
Pressure Detection:
Measurement Method:
Pulse Wave Detection:
Power Source:
Battery Life:
Operating Temperature
Storage Temperature
Main Unit Weight:
Main Unit Dimensions:
Cuff Size:
Arm Circumference:
UPC Code:
NOTE: These specifications are subject to change without notice.


LCD Digital Display
Pressure: 0 to 299 mmHg, Pulse: 40-180/min.
Pressure: ±3mmHg or 2% of reading
Pulse: ±5% of reading
Automatic by electric pump
Automatic pressure release valve
Automatic exhaust valve
Capacitive pressure sensor
Oscillometric method
Capacitance type pressure sensor
AC Adapter (or 4 "AA" batteries)
Approx. 300 uses when used twice a day
with new "AA"manganese batteries
50ºF to 104ºF (10ºC to 40ºC) /30 to 85% RH
-4ºF to 140ºF (-20ºC to 60ºC) /10 to 95% RH
Approximately 12 3/4" oz. (360 g)
not including batteries
Approx. 4 3/4" (w) x 3 3/8" (h) x 6" (l)
(121 mm x 86 mm x 151 mm)
Approximately 5 3/4" (w) x 17 1/2'' (l) (146 mm x
446 mm) Cuff tube 23 5/8" (l) (600 mm)
Fits arm circumferences 9" to 13"
(220mm to 320mm)
Main Unit, Arm Cuff, AC Adapter, Instruction
6 8113189540 8



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  • Angie Sep 30, 2014 02:35:
    This IS the unit we have and model numbers match along with picture of it. We get an error which reads E4. The manual does not address and E4. Only 4 other E's.
    This same question was asked in comments at another "manu​als" site but was not answered.
    ​What is an E4 and why is it not in the manual if the machine says it?