Keyless Entry iButton Eternity Series

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iButton Series Programming Guide Section: Programming Guide Software Version

Set Time Key

Overview:

This process uses a DS1977 program key and a DS1904 (or DS1994) iButton key to set the real

time and date of the lock.

•

Follow the on screen instructions to first 'Issue' the DS1977 key to 'allow' the lock to accept

a time setting, then 'Issue' the DS1904 (or 1994) time set key.

•

Apply first the DS1977 program key to each lock, then apply the DS1904 (or 1994 time)

time set key to each lock. The DS1904/1994 key has a real-time clock inside that continues

to run, so that even if there is delay at getting to a lock the time will still be right when

applied to the lock.

Tip: Other than DS1904/1994 real time key, just the DS1977 program key can also set the time of

the lock. This is just a 'snap-shot' of the time however. Using just the program key set will cause

some time errors since programming the key and programming the lock will take some time,

particularly if there is a long distance between the computer and the lock. We recommend using

Keyless Enty Locks For current prices, please visit our website. www.KeylessEntyLocks.com

46 Danada Sq West #4133 Phone: (630) 909-9504

Wheaton, IL 60189 Page 50 of 58 FAX: (630) 447-3635

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