Securitron DT-7 User Manual
Page 7
PN# 500-11800
Page 7
Rev. C, 02/11
8. DAYLIGHT SAVINGS TIME
When the time changes twice a year to and from Daylight Savings Time, the time in the unit
must be adjusted as with any clock. See section 2. for time setting.
9. POWER FAILURE CONSIDERATIONS
If power is removed from the Prime Time, it will lose both the time and its programming and will
have to be set up again from the beginning. In a DC application this can be forestalled by using
a DC power supply with its own battery backup to operate the Prime Time. This will not only
allow the Prime Time to operate in the event of a power failure, but will operate the DC loads as
well.
If the Prime Time is to be operated on non-battery backed up external power, an AA cell may be
added to the board in the space provided. Be sure to observe polarity. The AA cell backs
up the display module only. In the event of an external power failure, the Prime Time's relay
will not operate but the display module will retain the time and date as well as its programming.
The average commercially available AA cell should last at least 5 years in this application.
10. MAGNACARE
LIFETIME REPLACEMENT WARRANTY
For warranty information visit
www.securitron.com/en/site/securitron/About/MagnaCare-Warranty/