3
100
～
999.99
（
0.01
）
1000
～
9999.9
（
0.1
）
10000 and above
（
1
）
Working power
supply
The built-in battery or external charger,
charger conditions of use
，
Input 100-240 VAC
，
50/60 HZ
Charging time
About 2 hr
Instrument weight 1.7 kg
Instrument
dimension
246 mm
（
L
）
×156 mm
（
W
）
×62 mm
（
H
）
Use of
temperature
-10
℃～
50
℃
Relative humidity
≤90%
，
No dew
VI.Adjust The Wristband
For better grip, strip the belt and adjust the adhesive tape as shown in the following
figure.
VII.Battery Charging
When the battery is low after long storage or before the first use of the handheld
device, please use the charger attached to it to charge the battery for at least 2 hours,
and continue to use the hand-held tester when charging. When the battery is fully
charged, the charger light changes from red to green.
