TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . 2 – 4
Key Features . . . . . . . . . . . . . . . . . . . . 4
What’s in the Box . . . . . . . . . . . . . . . . 4
Product Overview . . . . . . . . . . . . . 4 – 6
Setup Instructions . . . . . . . . . . . . . . . . 7
Install Battery . . . . . . . . . . . . . . . . . . 7
Operating Instructions . . . . . . . . 7 – 10
Making Basic Measurements . . . 7 – 9
Tracking Min and Max Levels . . 9 – 10
Calibrating the Meter . . . . . . . . 10 – 12
Specifications . . . . . . . . . . . . . . . . . . 13
Operating & Maintenance Tips . . . . . 14
Warranty Information . . . . . . . . . . . . 15
Return for Repair Policy . . . . . . . . . . 16
INTRODUCTION
Thank you for purchasing General Tools &
Instruments’ EP8709 Calibratable 4-Function
Thermo-Hygrometer. Please read this user’s
manual carefully and thoroughly before
using the instrument.
The EP8709 can measure any
environment’s ambient temperature,
relative humidity (RH), and dew point and
wet bulb temperatures. These
measurements are typically made by three
groups of users:
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