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If you're looking for the 288+ datasheet featuring full technical specifications or the instruction manual, you can find them here.


Insulation Resistance
MeasurementEUT to earth/ground, EUT to AP, AP to earth/ground
Voltage50 / 100 / 250 & 500V DC @1mA
Range (low range) @ 50V DC0.01Mohms - 10 Mohms
Range (low range) @ Above 50V DC0.01Mohms - 20Mohms
Accuracy (low range)± 5% of reading +2 counts
Range (high range) @ 250V DC20Mohms – 50Mohms
Range (high range) @ 500V DC20Mohms – 100Mohms
Accuracy (high range)±10% +2 counts
Differential Leakage Measurement
Measuring Range75μA to 9999μA
Accuracy±5% of reading + 5 counts
Measurement / display resolution1μA
Measurement TypeTrue RMS
Measuring DeviceFrequency response characteristics to IEC 60601-1
Power Measurement
Range0.1kVA – 4kVA
Accuracy±10% + 2 counts
IEC Mains Lead Test
Test Duration2s
TestContinuity of all conductors, Insulation and Polarity
Standard Accessories (supplied with 288+)
Calibration certificate
Earth/ground bond test probe with clip
Earth/ground bond clip lead
Patient Applied part module
10 Applied part adaptors
Detachable 2 meter mains cable
Bluetooth USB dongle
Electronic instruction manual
Quick start guide
Application software
Earth Continuity
Method2 wire technique, using 'zero' lead function.
Test Current>+200mA, -200mA DC into 2 ohms
Max Test Voltage4-24V RMS o/c
Measuring Range (low range)0.001 – 0.999 ohms @ 0.001 ohms resolution
Measuring Range (mid range)1.00 – 9.99 ohms /@ 0.01 ohms resolution
Measuring Range (high range)10.0 – 19.9 ohms @ 0.1 ohms resolution
Accuracy± 3% of reading + 10 m ohms
Direct Leakage Measurement
Measuring Range4μA to 9999μA
Accuracy± 5% or reading +2 counts
Mains on A.P. voltageF-type only @ 110% of mains
Measuring DeviceAs per IEC 60601-1 requirements
Measurement TypeSeparate AC & DC for Patient (Auxiliary) Leakage to IEC 60601, True RMS for all remaining Leakage tests
Alternative Leakage Measurements
Test Voltage250V at mains frequency
Test Current3.5 mA current limited
Measurement Range4μA to 9999μA
Measurement Resolution1μA
Measurement Accuracy±5% of reading + 2 counts
Measurement TypeTrue RMS
Measuring DeviceAs per IEC 60601-1
Mains Outlet Test
Input voltage range0-300V AC
Max current16A
MeasuresL – E, N – E
Accuracy± 5% of reading + 2 counts
General Specification
Mains Power230V AC ±10%, 50-60Hz +/- 1Hz, 120V AC ±10%, 60Hz +/- 1Hz (USA model)
Battery6 x 1.5V AA
Weights1.6 kg / 3.5 lbs including batteries
Size(L x W x D) 270 x 110 x 75 mm / 10.5 x 4 x 3”
Operating Conditions0'C - 40'C, 32'F - 104'F, 0-90% RH - NC
Storage Environment-15'C - +60'C / 5'F - 140'F
Environmental ProtectionIP 40

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