Key cap markings are shown, followed by the input character or command in parentheses. All multiple-key input operations are indicated like this. About this User ’ s Guide u !x ( ' ) The above indicates you should press ! and then x, which will input a ' symbol. Splash Resistance, Dust Resistance, and Shock Resistance k 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). u T o turn the backlight on or off Press !a (LIGHT) to toggle the backlight on and off. You can conserve battery power by limiting backlight operation to only when you need it. LCD and Key Back Lighting This calculator is equipped with LCD and key back lighting to make the keys and display easy to read, even in the dark. You should note, however, that low battery power or incorrect replacement of the batteries that power the unit can cause the data stored in memory to be corrupted or even lost entirely. ġ-5 Be sure to ke ep p hy sical re cords of al l importa nt dat a ! The large memory capacity of the unit makes it possible to store large amounts of data. Avoid opening the battery compartment cover, USB port cap, and SD card cap in areas where moisture or salt wind is present, when your hands are wet, when wearing wet gloves, etc.Doing so creates the risk of calculator malfunction and personal injury. Do not swing the calculator around by its strap. When exposed to low temperatures, the calculat
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