4
9) T3
F1/F2
and
key: in HD206-1 and HD206-2 models, it selects the variable to be dis-
played between temperature (fixed) and relative humidity (fixed) or both of them, alternately.
When programming, it increases the displayed value.
10)
Te
symbol: it indicates that the display is showing the temperature of the external probe (op-
tional).
11)
Ti
symbol: it indicates that the display is showing the temperature of the built-in sensor.
12) T3
F1/F2
and
key: in HD207 and HD207-1 models, it selects the variable to be displayed
between internal temperature (fixed), external one (fixed) or both of them, alternately. When
programming, it raises the displayed value.
13)
Alarm
LED (ALARM): the red LED flashes to indicate that one or more acquired values have
exceeded the set-point and/or that battery is flat. During the battery test, it produces a series of
close flashings indicating that battery is low and that it has to be replaced as soon as possible.
14) T1
ON/OFF
and
LOGGING
key: it starts and stops a logging session .
15)
T2 Key not used.
16)
LOG
LED (Logging): the green LED flashes when the instrument is logging. During the bat-
tery test, it produces a series of close flashings indicating that the battery is charged.
17) T4
BATTERY TEST
key: key to be used to check the battery level. If the battery is charged,
the green LED (LOG) makes a series of close flashings. If it is low, the red LED (Alarm)
flashes.
18)
T3 Key not used
