Extech Humidity Meter Selection Guide

Extech Hygro-Thermometer + InfraRed Thermometer Extech EasyView Hygro-Thermometer Extech EasyView™ Hygro-Thermometer/ Datalogger Extech Hygro-Thermometer w/ remote probe Extech Heavy Duty Hygro Thermometer with PC Interface Hygro-Thermo-Anemometer
RS-232 Interface
   

Model

RH101 EA20 EA25

45320

407445

407412

Features

IR Thermometer        
Airflow option

RH range

10 to 95% 10 to 95% 10 to 95%

25 to 95%

10 to 95%

10 to 95%

Temperature

-58 - 932F IR
-50 - 500C IR

-4 - 140F Air
-20 - 60C Air
-4 - 140 F
-20 - 60 C
-4 - 140 F
-20 - 60 C

-15 - 49.9C
5 - 122 F

0 - 60 C
32 - 140 F

0 - 50 C
32 - 122 F

Dewpoint

  -4 - 140 F
-20 - 60 C
-4 - 140 F
-20 - 60 C
   

 

RS232

no no yes

no

yes

no

High/low setpoints

  yes yes

no

no

no

Analog output

no no no

no

no

no

Optional software

no no included

no

407000

no

Optional datalogger

no no included

no

380340

no

Optional AC adaptor

no    

no

156119

156117