4
Battery
4
www.
usautomatic
.com
Battery Low
The limit is about 2.7V.
B
attery-low status is
indicated
by the bac
kli
t
keys
blinking.
Accessing the battery
To acce
s
s the battery, remove
keypad from back plate
, then
remove
the 4xM3
screws that
hold
the internal
cover
to the front panel.
4x M3x5
Fig.
5
Lithium Battery
cR123A
3 Vdc
+
_
Slot for extra battery
cR123A
Snap out
the
pcb to open the
window that hosts
the battery
Internal cover
3
Power supply
The keypad can be powered externally with 12/24 Vac/dc, selecting the power
mode with the jumper J1.
Power selection
jumper
J1 = On : Battery cR123A
J1 = OFF: 12/24 Vac/dc
J1
J1
Fig.
3
Fig.
4
Extra battery
Expected single battery life is
2
years, if des
ir
ed a second battery can be
installed
CR123A ( not provided ).
For its installation,
snap out
the pcb under
the second battery
holder
and
Insert the battery with the positive pole upwards.