412355A V3.2 7/08

2

Introduction

Congratulations on your purchase of the Extech Current/Voltage Calibrator. The Model

412355A can measure and source current and voltage. 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.

POWER button

3.

UP and DOWN buttons

4.

MODE button

5.

UNIT button

6.

MEM and ZERO button

7.

Input/Output mini-connector

8.

AC adaptor jack

9.

Battery compartment

10. Neck strap holders

11. Function switch