Remove the protective boot from test unit. Then, remove the screws in the back cover of the tester and carefully separate the back cover from the front. Next, place two fresh AAA batteries in the unit (do not use rechargeable batteries). Then, carefully replace the back cover and tighten the screws. Finally, replace the protective boot.
Gardner Bender Autoranging Digital Multimeter, 7 Functions, Model# GDT-3200

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- Snap-in probes spaced to fit a standard outlets for quick, easy testing with one hand
- Compact design for easy use, storage and transportation
- Magnetic holding strap
- Rubber housing for a comfortable grip
- Wrap-around lead holders keep leads at the ready
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