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Display Legend

: indicates reading is higher than high alarm setpoint

for that parameter

: indicates reading is lower than low alarm setpoint

for that parameter

%RH: relative humidity unit

°C: Celsius temperature unit

°F: Fahrenheit temperature unit

[-]188.8: Humidity or temperture value or one of the

following four working status indications

LOG: Unit is logging data

- - -: Unit is in standby mode, ready to log data

FUL: Internal memory is full (and logging has been

stopped)

CON: Unit needs to be configured by software

SETUP INSTRUCTIONS

INSTALLING/REPLACING THE BATTERY

The HT20 uses a 3.6VDC “1/2 AA” Lithium-ion battery.

To open the battery compartment, use a paper clip or a

screwdriver with a fine point to push in the silver flange

showing through the small square hole in the rear of the unit

Fig. 1b.

All possible

display

indications

on the HT20

LATCH

 ! " # $ % & ' % ( ) * + , - . / 0 1 2 / " 3 4 5 4 ! 4 / % 6 7 3 8 4 5 8 4 ! 9 : " ! ; $ ; % < = A

General HT20 User Manual

Questions and Answers: