User Manual

412300A-EU-EN-V3.3-1/11 2
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Introduction
Congratulations on your purchase of the Extech Current Calibrator Model 412300A. The
412300
A can measure/source current and can also power a current loop. A built-in five
location memory can store customized calibration current output steps. The Oyster
Series meters have a convenient flip up display with neck-strap for hands-free operation.
This meter is shipped fully tested and calibrated and, with proper use, will provide years
of reliable service.
Meter Description
1. LCD display
2. Battery Compartment
3. AC adaptor jack
4. Calibration Cable input
5. Function switch
6. Neck-strap posts
7. Keypad