8
Fig. 1. The controls,
indicators and physical
structures of the
HHAQ-108
1
2
6
5
4
3
WHAT’S IN THE PACKAGE
The HHAQ-108, a 110VAC adaptor and this user’s manual
come in a soft pouch inside a white box.
PRODUCT OVERVIEW
Fig. 1 shows all controls, indicators
and physical structures of the
HHAQ-108. Fig. 2 shows all possible
indications on the LCD. Familiarize
yourself with the locations and
functions of the control buttons
and the meanings of the display
icons before moving on to the
Setup Instructions and Operating
Instructions.
1. Formaldehyde gas sensor inside
vented ball housing
2. Dual-readout LCD
3. Control buttons
HOLD
. Freezes both readouts.
Also used to increment
individual digits of high
concentration alarm.
MODE. Pressed and held
, calibrates meter to 0 ppm in
fresh air. Pressed briefly in high alarm adjustment mode,
shifts one digit to left.
PWR. Pressed briefly with meter off,
powers meter on.
Pressed briefly with meter on
, arms/disarms high
concentration alarm.
Pressed and held with meter on,
powers meter off.