General Tools DTH850 User Manual [en, fr, es]
DTH850
USER’S MANUAL
Indoor/Outdoor
Thermometer and Clock
with Humidity Display
Thank you purchasing this new generation electronic
thermometer. Designed and engineered with state-ofthe-art technology and components. This instrument will
provide accurate and reliable measurements of digital
indoor/outdoor thermometer and clock humidity and
includes many extra features: ice alert, temperature
trend indictor, memory for minimum and maximum
temperature, clock, alarm clock with snooze and date.
Read this manual carefully to fully explore the features
and functions of this product.
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1. GENERAL SPECIFICATIONS:
Power Source: 1 “AAA” battery
Battery Life: 12 month of continuous operation
Temp Range:
Indoor: 32º to 122ºF (0º to +50ºC)
below range = Lo, over range = Hi
Outdoor: -58º to +158ºF (-50º to +70ºC)
below range = Lo, over range = Hi
Hygro Range:
Indoor: 20% – 99%, below 20%, displays 20%;
above 99%, displays 99%
Sampling Cycle: 8 seconds
Cable Length: 10 ft (3m)
Accuracy:
Thermo: less than +/- 1.5 degree C
Hygro: +/- 5% (60-80% RH), +/- 8%
(20-60, 80-99% RH)
Clock: +/-1 min per month
Resolution: 0.1 degree, 1% for RH
°F/°C: User selectable
12/24 hr: User selectable
Alarm: Daily alarm with 8 minutes Snooze
Ice Alert: -1° to + 4°C (one beep/sec, every sec)
1 minute on, 59 min off, until any key press or
outside the range (every hr beep 60 sec)
“Ice” icon flash 1 Hz between 30° to 39°F
( –1° to +4°C)
Key Tone: available only for version with buzzer installed
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2. DEFAULT VALUES:
- Clock = 12:00
- Alarm = 12:00
- 12/24 = 24 hr
- Alarm position = off
- Ice alert = off beeper
(ice icon always ready)
- C = Degree C
3. OTHERS:
- Auto Exit = 8 seconds without saving
- SET MODE = Digit flashes
- SNOOZE = SNZ icon flashes during
the 8-min snooze
4. NAME AND FUNCTIONS OF BUTTONS:
Button Press Function
MODE - Display Temp > Hygro > Temp …
• Hold 2 seconds for clock set
- Hr > Min > Exit & Confirm
• MODE = Select, SET = Confirm
SET - Enable/disable alarm
- 1 step advance in setting
• Hold 2 seconds
- 8 steps/sec in setting
MAX/MIN
- Display in & out MAX temp + Humidity for
8 seconds. With MAX value still on screen, press
the MIN/MAX button a second time to display MIN
values for 8 seconds. Unit auto exits MIN/MAX
mode in 8 seconds.
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- While MAX or MIN values are being displayed
on screen, press CLEAR to clear records.
“ - - - . - C/F/%” displays for 3 seconds when
clearing MAX or MIN records, then the screen
returns back to normal temp.
CLEAR
- When MAX/MIN values are displayed on screen,
press CLEAR to perform clear record function as
described above
- At MAX or MIN temp display press CLEAR to clear
“Temp Trend”
- At normal temp mode, press to READ Alarm Time
for 8 seconds
- At normal temp mode, HOLD 2 seconds to enter
alarm set
- CLEAR = Select (Hr, Min), SET = Confirm
SNOOZE
- Trigger 8-minute repeating snooze alarm when
alarm is sounding
C/F - press to change °F > °C > °F
- Hold 2 seconds to change hours 24 > 12 > 24
ALERT
- Press ALERT to enable ice alert and Humidity Alert
- Hold ALERT button for 2 seconds for the following:
• Set upper humidity limit, upper limit arrow flashes,
default at 50%, press SET to increase value 1 step
or hold for fast advance, press ALERT to confirm
setting
• Lower limit arrow flash at 1 Hz, default at 50%,
press SET to decrease value 1 step or hold for
fast backward
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• With roll over
• Finally press ALERT to confirm and exit
• When ambient RH reach the preset level, the
relevant arrow icon and the Humidity digit will
flash. Press any key to stop alarm and flashing.
• Alarm beeps for 60 seconds and rests for
55 minutes, it repeats beeping when within the
range. Press any key to stop beeping.
5. TEMPERATURE TREND:
- 3 arrows each for indoor and outdoor temp, total 6
arrows
- Up, Steady, Down
- Power-up display STEADY
- If temp goes up for 1.0 degree higher, the icon
immediately indicates UP
- If temp stays within 1.0 degree for 450 samplings
(1 hr), icon indicates STEADY
- If temp goes down for 1.0 degree or more, the icon
immediately indicates DOWN
- When MAX or MIN temp is on screen, a press on
the CLEAR button will immediately clear the UP or
DOWN icon to STEADY
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