Radio Shack ET-543 owner manual Replacing Battery, FCC Wants YOU to Know

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REPLACING THE

BATTERY

If you follow the instructions in “Charg- ing the Battery,” the supplied battery should last for several years. When the battery loses its ability to fully charge, order a replacement battery through your local RadioShack store. Follow these steps to replace the battery, then charge the new battery according to the instructions in “Charging the Bat- tery.”

1.Slide off the battery compartment cover and loosen the plastic strap securing the battery. Then discon- nect the old battery’s plug from the pins and remove the battery.

2.Insert the new battery in the com- partment and secure it with the plastic strap. Then connect the battery’s plug to the pins inside the compartment.

3.Replace the battery compartment cover.

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Important: Your telephone contains a rechargeable nickel cadmium battery. At the end of the battery’s useful life, it must be recycled or disposed of prop- erly. Contact your local, county, or state hazardous waste management authorities for information on recycling or disposal programs in your area. Some options that might be available are: municipal curb-side collection, drop off boxes at retailers, recycling collection centers, and mail back pro- grams.

THE FCC WANTS YOU TO KNOW

In the unlikely event that your phone causes problems on the phone line, the phone company can temporarily discontinue your service. If this hap- pens, the phone company attempts to notify you in advance. If advance no- tice is not practical, the phone compa- ny notifies you as soon as possible and advises you of your right to file a com- plaint with the FCC.

Also, the phone company can make changes to its lines, equipment, opera- tions, or procedures that could affect the operation of the phone. The phone company notifies you of these changes in advance, so you can take the neces- sary steps to prevent interruption of your phone service.

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Contents ET-543 Features Fm Page 3 Tuesday, August 17, 1999 1036 AM Read this Before Installation FCC StatementContents Installation Installing the PhoneSelecting a Location Connecting Battery Charging BatteryPreparation Setting the Dialing Mode Operation Using the Handset At the BaseUsing the Handset Away from the Base MAKING/ANSWERING a CallUsing Redial Using FLASH/DELReducing Interference Using Memory DialingStoring a Number in Memory Dialing a Stored Number Entering a Pause A Memory NumberTesting Stored Emergency Numbers Chain DialingTroubleshooting SolutionsProblem The handset’s range decreases Care and Maintenance Replacing Battery FCC Wants YOU to KnowLightning RadioShack Division of Tandy Corporation Fort Worth, Texas

ET-543 specifications

The Radio Shack ET-543 is a noteworthy addition to the realm of portable electronic technology, particularly in the category of handheld calculators and educational tools. Launched during a vibrant era of innovation, the ET-543 encapsulates the spirit of the late 20th century, when personal computing and digital gadgets became increasingly accessible to the general public.

At its core, the ET-543 features a natural display that allows for easy viewing of calculations, making it user-friendly for both novices and seasoned users alike. The device is equipped with a combination of mathematical functions that streamline computations ranging from basic arithmetic to more complex algebraic operations. This wide array of capabilities makes the ET-543 an ideal choice for students and professionals who require a reliable tool for everyday calculations.

One of the standout technologies of the ET-543 is its robust memory function, which allows users to store multiple calculations for later use. This feature is particularly beneficial for users who engage in repetitive tasks or require a quick reference for previously calculated values. Coupled with its programmable functions, the ET-543 presents a versatile platform that can accommodate a range of mathematical needs.

In terms of design, the Radio Shack ET-543 boasts a compact and lightweight form factor, making it highly portable. This characteristic is essential for users who need a dependable calculator on the go, whether in the classroom, workplace, or during travel. The button layout is intuitive, allowing for easy navigation through various functions without the need for extensive training.

Another important aspect of the ET-543 is its educational value. The device serves as a practical teaching aid, helping students grasp fundamental concepts of mathematics and computation. Its durability and ease of use ensure that it stands up to repeated use in educational environments.

In summary, the Radio Shack ET-543 is more than just a calculator; it embodies the fusion of technological innovation and user-centric design. With features tailored to meet a variety of mathematical challenges, coupled with its portability and educational utility, the ET-543 remains a symbol of practical technology that resonates with users across generations.
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