RS Pro RS-91 Manuel D'instructions page 3

Mini Temperature & Humidity Meter / English
Display Dual digital LCD display with backlight
Sensor Type Humidity: Accurate capacitance sensor
Temperature: Thermistor
Low battery indication The low battery signal " " flash when battery voltage
drops below 7.2V; The backlight and low battery signal
" " flash twice when battery voltage drops below 6.5V,
then auto power off.
Operating condition 0~50°C(32~122°F)<80%RH non-condensing
Storage condition
-40~85°C(-40~185°F) <99%RH non-condensing
Power One standard 9V battery.
Dimension 204 (L) X 54 (W) X 36 (H) mm
Weight
172g
4. Operation instructions
1. Power on/ off, Auto-power off:
Power on: Shor t press button " " to power on, system default auto power off. Long
press to power on and disable auto power off function. Long press the button again to
enable the auto power off function
Power off: Short press button " " to power off.
Auto-power off: Auto-power off signal " " displays in the left coner of LCD and the
instrument will auto-power off in 10 minutes of no button operations.
If press the power on/off button for over 1minutes, it will be recognized as faulty
operation and the instrument will auto power off.
2. Temperature: Shor t press to swi tch the measure temperature type: NULL(dr y bulb
temperature) WB (wet bulb temperature)
(dry blub temperature), cycle in this order. Default measure dry blub temperature; Long
press temperature button to switch temperature unit, and cycle in turn °C
°C , default unit is the last unit before power off.
3. Bluetooth: Long Press once to enable the Bluetooth communication function; Long press
once again to disable the function.
4. MAX/ MIN:
Press MAX/MIN button once and "MAX"appears on the display. The LCD is now displaying
2
All manuals and user guides at all-guides.com
DP (Dew point temperature) NULL
°F
02/01/2018 Version No. 001
Mini Temperature & Humidity Meter / English
the maximum reading of the selected parameter in the display. The display reading will not
change until a higher reading is registered.
Press the MIN/MAX button again and "MIN"appears on the display. The LCD is now
displaying the minimum reading of the selected parameter in the display. The display
reading will not change until a lower reading is registered.
Press the MIN/MAX button once again to exit the MIN/MAX mode, no "MAX/MIN"display
on the LCD now.
Cycle in order: NULL MAX MIN NULL.
5. HOLD/ Backlight: Press Hold/backlight Button to enter hold function, the LCD displays
"HOLD". At hold mode, only power button and Hold/backlight button is enabled. Short
press the button again to disable the hold function, no"Hold"displays on LCD. Long press
to enable backlight and long press once again to disable the backlight. (Note:button 2, 3, 4,
5 can be enabled only when the instrument is power on.)
5. Maintain
1. The instrument should be cleaned with a damp cloth and non–irritating cleanser when
necessary.
Do not use corrosive and irritating cleanser.
2. Please keep the instrument in proper temp and humidity environment.
6. Battery Replacement
If the low battery signal appears on the LCD display, it indicates that the battery should
be replaced. Open the battery cover with screwdriver, then replace the exhausted battery
with new battery.
02/01/2018 Version No. 001
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