Specifications subject to change without notice.
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www.extech.com 9/19/11 - R1
NIST Calibrateable and Programmable Alarms
Warning of High or Low Humidity Conditions
Hygro-Thermometer Humidity Alert w/Dew Point
Ordering Information:
445815 ........................Humidity Alert II Hygro-Thermometer with Dew Point
445815-NIST................445815 with Calibration Traceable to NIST.
RH300-CAL ..................Optional 33% and 75% RH calibration standards
Features:
•Large, easy-to-read triple LCD displays % Relative Humidity,
Temperature and Dew Point
•%RH audible and visual alarms, with adjustable set points,
alert when humidity exceeds set limit
•Probe clips onto meter or extends on 18" (457mm) cable
•Max/Min with Reset function
•Rear calibration adjustment pot for Humidity and Temperature
(available with NIST certification and optional Calibration
Standards)
•Complete with built-in stand, wall mount bracket, remote
sensor and 2 AAA batteries; Optional calibration salt bottles
Model RH300-CAL
RH300-CAL Optional calibration salt bottles
Specifications
Humidity 10 to 99%
Temperature 14 to 140°F (-10 to 60°C)
Basic Accuracy ±4%RH; ±1.8°F/1°C
Dimensions 4.3 x 3.9 x 0.78" (109 x 99 x 20mm)
Weight 6oz (169g)
Applications:
•In summertime, identifies and
warns when conditions for mold
growth exist
•In wintertime, identifies and warns
when low humidity conditions for
static electricity exist
•Remote probe allows for
measurements behind walls
or in difficult to access locations
•Air temperature and dew point
temperature indicate where
condensation may occur
•Monitor conditions in laboratories,
storage areas and other controlled
environment settings
•Ideal solution when traceable ISO
calibrations are required by
operating standards
