User's Manual

Thermometer eTE-89B4 User Manual V1.0
8
Unit
°C/°F (default unit is °C)
Measurement time
1S
Interval measurement
time
3S
Communication method
Bluetooth 4.0
Operating Voltage
DC3.0V
Low battery parameters
2.6±0.15V
Working current
＜120ma
Stand-by current
＜25uA
Working Environment
Temperature: 5 ° C ~ 40 ° C
Relative humidity: ≤80% RH
Storage environment
Temperature: -20 ° C ~ +55 ° C
Relative humidity: ≤93% RH
Battery
2xAAA
Battery life
Two years with two AAA (LR03) batteries
The number of operations
500
Expected Service Life
Five years from the date of production
Ⅲ. Specified atmospheric conditions
Temperature/℃
23±2
Relative humidity/%
60±15
Atmospheric pressure
860 hPa～1060 hPa（645 mmHg～795 mmHg）
Ⅳ.Product features
 Temperature unit conversion: °C / °F (default is °C).
 High temperature alarm function: normal body temperature result, short vibration, no
flash screen.
 Low fever 37.2~37.4°C (99.0~99.3°F) results, the device will vibrate twice, and
keep the splash screen, 1 second on and 1 second off.
 High fever more than 37.5℃/99.5℉， the device will vibrate three times, and keep the
splash screen, 0.5 second on and 0.5 second off.
 Memory query: Press and hold the power button in standby mode for about 4
seconds, the screen will display For/Ear, you can press the button to query. There are
a total of 24 groups of local data. The ear temperature and the forehead temperature
mode are each 12 groups.
 Connect your phone to Bluetooth and open the phone app to view historical data.