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Power
Base Unit
The base unit can be powered by four "D" cell batteries (alkaline or rechargeable)
or by AC power through a power adapter. Batteries cannot be recharged in the
unit.
Low Battery Indicator
Low battery power is indicated by the base unit LED flashing yellow when 25 per-
cent of battery life remains (approximately five hours). The LED flashes, and con-
tinues to flash in a pattern of three seconds on/one second off, until the batteries
are replaced or fail.
Battery Replacement
The base unit battery compartment is located at the back of the unit, below the
power switch and AC/DC port. Open the compartment and replace the batteries,
ensuring that the polarity is correct, as shown in the diagram.
! Caution: Remove all batteries from the RT-7690 series base unit and RF
remote control/ laser detector whenever the units are stored for an
extended period of time.
Power Standby Mode
When commands are not received for 25 minutes, the RT-7690 series base unit
automatically enters Power Standby mode to save battery life. The base unit LED
flashes green, once per second, to indicate Power Standby mode. The timer is
reset each time a command is sent to the base unit from itself, from the RF remote
control, or if the laser detector is still in use.
•
To override Power Standby mode for the base unit, press and hold its Laser
On/Off button
"chirps," confirming that automatic power standby is disabled. After automatic
power standby is disabled, the base unit continues to operate for a maximum
period of eight hours.
•
To re-enable automatic power standby, press and hold the Laser On/Off but
ton
again for three seconds. The command is confirmed by another beep
and one "chirp."
When the base unit enters Power Standby mode, it "remembers" the settings that
were in effect, and returns to these settings when a command is issued and power
returns. Current settings are not retained when power is turned off with the base
unit main power switch.
for three seconds. The base unit emits a beep and two
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