Tenmars ST-502, User Manual

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1
1 Introduction
ST-502 is a desktop indoor air quality monitor that
can measure carbon dioxide, relative humidity, air
temperature, and ventilation rate.
2 Accessories
1 ST-502 Ammeter
1 User’s Manual
1 AC100~240V
12V/1A (5.5*2.1*1.0mm) switching
transformer
1 5-pin USB cable
3 Safety Precaution
Note! Please refer to this manual.
Improper usage may damage the
ammeter and its components.
Complies with European Directive
 Do not operate in environments with flammable
gas or humid environments.
 Operating altitude: 2000 meters below sea level.

Operating environment: Indoor use; contamination
level class 2.
 Cleans wide with soft cloth when dirty, such as
glasses cloth. Do not clean with chemical and
other solvents.

EMC: EN61326-1:CISPR 11:Group 1, Class A

Class A –Equipment for use in all establishments
other than domestic

Group 1 –RF energy generated is needed for
internal functioning