©
Copyright 2014, Sargent & Greenleaf
Page 11
O
perating
i
nstructiOns
S&G
™
Model 2740B
Electromechanical Safe Lock
b
eep
p
atterns
b
eep
p
attern
I
dentIFIcatIon
t
able
The 2740B lock provides information to the user in the form of audible beeps. There are two kinds of beeps—a short, distinct beep and a long
beep that is ten times as long as the standard beep. We refer to the long beep as a
brap
.
The following table identifies all of the beep patterns the 2740B lock can emit and what they mean. Note that some beep signals can mean more
than one thing, depending on what operation is being performed.
Beep Pattern
Description
1 beep
change key has been inserted and recognized
2 beeps
after the 2nd dual user code is entered for the first time while changing from single to dual user mode
3 beeps
sounded between most steps of a programming sequence (the exception is the preceding table entry)
4 beeps
sounded after the first combination is successfully entered in dual control mode
5 beeps
sounded when a dial calibration, combination change, operating mode change, or code recovery procedure
is completed
10 beeps
sounded whenever the lock is opened to indicate low battery condition (repeats periodically)
3 beeps/pause/3 beeps/pause/3 beeps
sounded when the lock has never been calibrated and needs calibration
1 brap (long beep)
sounded when an error occurs in a programming or dialing sequence
2 braps (long beeps)
sounded when the dial is turned while the lock is in a ten minute penalty time
1 beep/pause/4 beeps
battery condition is okay
1 beep/pause/2 beeps
battery condition marginal (replace batteries)
