4 Operation and installation
24
SMARTS II
5. Put the battery in place into the compartment.
6. Replace the battery-compartment cover and finger-tighten the
four captive screws. It is important that the screws are tightened
sufficiently so that the cover slightly compresses the EMI gasket.
7. Mount the monitor in the desired location using the holes in the
mounting brackets and screws suitable for the surface that the
monitor is being mounted on.
4.5 External power supply operation
The SMARTS II can be operated from an external low voltage supply. It
can also be connected to an external circuit to make use of its remote-
alarm capability by using the same cable and connector used for the
power supply.
NOTICE
Incorrect voltage applied
Risk of malfunction and permanent damage to
the device
pin 6 and pin 7 are shorted
If both pins are in use, the same voltage must be
applied on both pins (+12 V to +24 V).
To operate the SMARTS II from an external low
voltage supply
1. Remove the battery compartment cover by loosening the four
captive screws. The screws should only be finger tight but a slot
is provided for a screwdriver should it be needed
2. Remove and disconnect the battery if it has previously been
installed. The monitor is shipped with the battery supplied in a
separate package to maintain battery life while in storage and
during shipment.
3. Move the
BATT
–PS
switch (battery
–power supply), which is
located inside the battery compartment, to the
PS
position.
4.
Set the alarm threshold to the desired level.
See 4.6
5. Ensure that the battery connector is not touching a metal surface.
Alternately, the battery connector and leads may be removed by
simply disconnecting at the printed circuit board.
6. Replace the battery-compartment cover and finger-tighten the
four captive screws.
7. Connect the SMARTS II to a +12 V to +24 V external power
supply.
