STI LT-1 User Manual

STI LATCHING/TIMER MODEL LT-1

RELAY ACTIVE LED RED

POWER LED GREEN

1.28 in.
33mm

1.74 in.
44mm

.632 in.

16mm

+

-

*POWER IN

12 - 24 VAC/VDC, 18 mA

TIMER

CONTROL

FORM “C”

DRY CONTACTS

3A, 30VDC

RESET

INPUT COM

TRIGGER

N.C.

COM

N.O.

NOTE:

It is important to read, understand and follow all instructions provided with this
product. It is the installer’s responsibility to comply with NFPA 70, 72 & 101, NEC,
mounting specifications according to ADA and other applicable codes. This product is
not to be used in place of panic hardware. To avoid electrical shock, DO NOT attempt
to install this product when power is on. After installation and testing are complete,
provide a copy of this manual to all personnel responsible for testing and maintenance
of this product.

RELAY MODE

+-

x

x

x
x

TIMER START

S

WITCH

TIMER OVERRIDE

RESET (OPTIONAL)

*POWER IN

12-24 VAC/VDC,15mA

TO MAGNETIC LOCK

(FAIL SAFE MODE)

JUMPERS

15 SEC

RELAY MODE JUMPER

30 SEC

45 SEC

LATCH

IF TRACES ARE INADVERTENTLY CUT,

SOLDER JUMPER WIRES USING

APPROPRIATE HOLES.

RELAY MODE

N.O.
N.C.

NO CUT

CUT
15s
30s
45s
Ltch

RelayNORelay

COM

RelayNCTrig Input

Com

Reset Power Input

+

-

12 to 24 Volts

AC or DC

MODEL LT-1

RELAY MODE

N.O.
N.C.

NO CUT

CUT
15s
30s
45s
Ltch

N.O. - Relay switches with power to circuit - Fail Safe
N.C. - Relay is in same state as with no power to circuit - Fail Secure

TO CHANGE TIMER SETTINGS

Cut jumpers with “X”, do not cut jumpers with “ “.
Default timer setting is 15 seconds.

If the trigger is activated during a timing cycle, the timer is restarted.

NOTE: To ensure jumpers do not reattach or short to other components, cut
jumper off completely flush to PCB.

Electronic warranty form at www.sti-usa.com/wc14.

Printed in USA LT-1PCB 11/10

Waterford, Michigan 48327-1209

2306 Airport Road

Phone: [phone] • Toll Free: 800-888-4784 • Fax: [phone]

www.sti-usa.com