Tonghui TH2821A - Battery Recharge

TH2821A OPERATION MANUAL
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6. Other Functions：
z Press u key to select the second function, “SHIFT”
will be lighted on the screen.
z Press MENU key, APO will be flashing on the screen.
Current delay time is also displayed.
z Press
x key to enter the auto power off function
setup, current delay time flashes on the screen.
z Use p,o keys to select 5’, 10’, 20’,30’ or OFF.
z Press
x key to confirm the current delay time and
return to the main menu.
*Note：
When an external DC adapter is used, APO function is disabled
automatically.
z Use r, q keys to select “CAL” function.
z Press
x key to enter the calibration function. This
function is protected with password and is not
available for users.
3.3 Battery recharge
*Note：
The instrument will not be started, when the battery
is weakening. Recharge the battery immediately by using
DC Adaptor Power Supply.
z Battery Power Indicator will flash when charging.