3
DISPLAY
– RJ45 (“Ethernet”) socket connects to
the touchscreen.
UNIT
– RJ45 socket connects to the main board
of the A/C unit
BATTERY
– screw terminal (2+3 pins) for external
power supply, and to measure the battery voltages:
•
GND
–connected to the negative (ground)
rail, connection is optional.
•
+A
– positive terminal of the battery powering
the Smart Touch unit (usually the service/
house bank), connection is optional.
•
+B, +C, +D
– positive terminals of other
batteries to be monitored, connection is
optional.
RST
–
to erase memory and factory-reset the
device.
PWR
–
if the device is powered from an external
source (BATTERY screw terminal GND and A+
pins) this jumper must be closed.
GPS
– internal antenna connector of the GPS
module
GSM
–
internal antenna connector of the
GSM-module. Should you ever need to open
the device, please make sure that the antennas
remain securely connected.
SIM card
– to access the device via cellular
network you need to insert a SIM card (with data
plan) into the card holder at the bottom of the
circuit board.
SIM card holder at the bottom
