
7-DAY TIMER INSTRUCTIONS
1 MO TU WE TH FR SA SU
2 MO TU WE TH FR SA
3 MO TU WE TH FR
4 SA SU
5 MO TU WE FR
6 TU TH SA
7 MO WE
8 TH FR SA
9 MO
10 TU
11 WE
12 TH
13 FR
14 SA
15 SU
GENERAL INFO
7-day timers are available in the following models:
S-T12 12-Volt DC Digital Timer
S-T24 24-Volt AC/DC Digital Timer
S-T110 110-Volt AC Digital Timer
Input voltage depends on the model. Please verify the
model you have before proceeding. The model number
can be found on the rear of the timer housing.
These timers allow storage of up to 17 on/o events per
day as well as 15 dierent daily program schedules to
allow for maximum exibility (see Figure 1).
NOTE: Program options shown on timer display are
ordered as shown in Figure 1 but are not numbered.
All timers come equipped with a form “C” relay capable
of 16 A @ 30 VDC.
All timers feature an internal battery for backup power
in the event of a power outage.
Figure 1: Daily Program Schedules
DIMENSIONS IN INCHES
2.36
2.13
2.13
2.36
.13
2.44
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© 2017 Security Brands Inc. All rights reserved. I-ST-EN Rev. B
1.30
Figure 2: Timer Dimensions

7-DAY TIMER INSTRUCTIONS
BUTTONS/INDICATORS
CLOCK: to adjust day and time; must be pressed and
held to allow use of the day and time buttons
TIMER: to set up and review programmed events
DAY: to adjust day of week
HOUR: to adjust hour
MIN: to adjust minutes
MANUAL: to select between ON/AUTO/OFF modes
(active mode indicated by bar on LCD)
Modes:
ON: relay is active
AUTO: timer will follow user-specied programs
OFF: relay inactive; no programs will be followed
ON: relay indicator (LED on when relay is active and
o when inactive)
P : resets timer settings
EXITING PROGRAMMING MODE
Once all events are programmed, press CLOCK to
exit programming mode.
ACTIVATING TIMER FOR AUTOMATIC USE
Press MANUAL button until indicator bar on LCD
screen is displayed above AUTO.
REVIEW PROGRAMMED EVENTS
Press TIMER button to see the rst event
programmed. Repeat to review each event.
NOTE: If an ON time is set, a corresponding OFF
time must also be set.
NOTE: Timer will exit programming mode
automatically after 20 seconds of inactivity.
WIRE CONNECTIONS
NOTE: Use 1/4″ female spade connectors for your
wire connections.
1 = Power Positive + (S-T12 = 12 VDC,
S-T24 = 24 VAC/DC, S-T110 = 110 VAC hot)
Figure 3: Front Panel
TIMER OPERATION
SETTING TIME AND DATE
Press and hold CLOCK, then use the DAY, HOUR,
and MIN buttons to set time and date.
PROGRAMMING EVENT 1
1. Press TIMER. 1
unless a time is already stored in memory.
2. Press DAY until desired daily program schedule
is displayed on LCD screen (See Figure 1).
3. Press HOUR and MIN to set desired ON time.
4. Press TIMER button again. 1
on LCD Screen unless a time is already stored in
memory.
5. Set desired OFF time as before.
ON
--:-- will appear on LCD screen
--:-- will appear
OFF
2 = Power Negative - (S-T12 = 12 VDC,
S-T24 = 24 VAC/DC, S-T110 = 110 VAC neutral)
3 = Timer Relay NC (Normally Closed)
4 = Timer Relay NO (Normally Open)
5 = Timer Relay COM (Common)
Refer to Figure 4.
Figure 4: Wire Connections (rear of unit)
PROGRAMMING EVENTS 2–17
Repeat steps listed for programming event 1.
© 2017 Security Brands Inc. All rights reserved. I-ST-EN Rev. B