Directed Electronics 750 - Manual (Page 21)

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high frequency
Your system transmits and receives at 433 MHz. This provides a cleaner
spectrum with less interference and a more stable signal.
smart power up II
This security system will store its current state to non-volatile memory. If
power is lost and then reconnected the system will recall the stored state
from memory. This means if the unit is in Valet ® Mode and the battery
is disconnected for any reason, such as servicing the car, when the bat-
tery is reconnected the unit will still be in Valet ® Mode. This applies to
all states of the system including arm, disarm, and Valet ® Mode.
power saver mode
Your system will automatically enter Power Saver Mode while armed or
in Valet ® Mode, after a period of time in which no operation has been
performed. This lowers the current draw on the vehicle's battery and
prevents the system from draining the battery. Power Saver Mode takes
over under the following conditions: