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4. Splash Resistance, Dust Resistance, and
Shock Resistance
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Splash Resistance and Dust Resistance
This calculator satisfies the requirements of the IP54* splash proof and dust proof protection
levels defined by the International Electrotechnical Commission (IEC).
* IP stands for “ingress protection”. The “5” of the left digit means Class 5 (no ingress of
dust that affect device operation) protection against solid objects. The “4” means Class 4
protection against liquids (no harmful effects from water sprayed from all directions).
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Shock Resistance
This calculator has cleared independent testing by CASIO that was conducted based on
the United States Defense Department MIL-STD-810G shock resistance performance test
methods*. Test methods are those described below.
Local testing by natural dropping of the calculator to the floor (P tile on concrete) from a
height of 122 cm on six faces. Test data represents actual cumulative values based on
CASIO standards, and do not constitute any guarantee of non-destruction of or non-
damage to the actual product exterior.
* Environmental laboratory test method (Method 516.6-Shock) of the United States
Department of Defense MIL-STD-810G military standard, which requires passage by a total
of at least five devices, which are drop tested from a height of 122 centimeters (4 feet) onto
a plywood (lauan) drop zone, in groups of five, for a total of 26 drops (6 faces, 8 corners, 12
edges)
Important!
• Shock resistance testing assumes exposure to shock during normal everyday use.
Subjecting the calculator to extreme shock may destroy it.
• Even if exposure to shock does not result in calculator operational performance, it can cause
scratching of the calculator’s display or other damage.
• Splash resistance, dust resistance, and shock resistance testing of this calculator was
performed using CASIO test methods. No guarantees are made concerning the ability of the
calculator to be impervious to damage and/or malfunction.
