Hall Ammeter and Voltmeter
Use Hall Ammeter of “WLS-HVA050/WLS-HVA100” you can
measure positive current and negative current. You can measure
the current of +VCC/VCC/GND .User Hall Ammeter We can
measure any DC current unlimited,because the Hall Ammeter of
measure is isolated.This design allows system designers to monitor
any current path without breaking or changing original system
layout at all.Hall Ammeter of WLS-HVA050 and WLS-HVA100
were production by WOOLIIS TECHNOLOGY CO.,LIMITED.
The hall ammeter advantage:
Instructions:
（1）Access Power Supply range 5V to 120V
（2）Use electric wire by pass the through of hall current sensor
hole to measure passing current.
Key Instructions:
Short Press ,when the time < 2S of press key. It will switching
Hall Ammeter for there mode:
【1】Current voltage in turn display mode.
【2】Single current display mode.
【3】Single voltage display mode.
How to switching mode?
(1)Short press key of the back,the LED will display“ A ”，that means now in single current display mode.
(2)Again short press key of the back,the LED will display“A U”，that means now in current voltage in turn display mode.(Note: when display current the LED display will flashing,and display voltage
it will not.)
(3)Once again short press key of the back,the LED will display
“ U ”，that means now in single voltage display mode.(Note: when measure the voltage it was the power supply voltage of Hall
Ammeter)
Long Press ,when the time > 2S of press key.The LED will
display “CCC” that it will clear the current.
