GVM GVM-PRO-SD650B - Function Introduction & Instructions for Use; Menu Functions

10
7
There are two power supply modes to choose from:
①Use the AC power cord for power supply.
② Use two V button batteries for power supply.
(Batteries must be inserted into both battery slots to provide power, and the
power is halved when using batteries.)
Batter
y slot
P
ower input interface
(
Bat
teryneedstobepurchasedsep
arately)