INSTALLATION INSTRUCTIONS
55 SERIES ELECTRIC STRIKE
P:\INSTALLATION INST\ELECTRIC STRIKES\INST-55\INST-55.vsd REV D 10-12 Page 1
SDC 55 Series eavy duty electric strikes are designed
for use wit cylindrical and mortise locksets and mortise
exit devices. Several faceplate configurations eliminate
t e need for centerline relocation, making t em perfect
for new or retrofit construction.
FEATURES:
Non- anded
No Centerline relocation
Up to 3/4” latc and 1” deadbolt
1/8”Horizontal alignment adjustment
Field selectable Fail-Safe/Fail-Secure
Field selectable 12/24VDC
Stainless steel, corrosion resistant
Tamper resistant eavy duty construction
Plug-in connector
Fits ANSI 115.1 frame prep. wit face modification
Patent pending
INSTALLATION
1. Verify lock compatibility, refer to page 2 and Fig. 6, page 4.
2. For proper frame preparation, refer to template drawings,
Fig. 4 & 5, page 4.
2. Factory supplied in Failsecure mode. For Failsafe mode refer
to Fig. 2, page 3
3. Determine minimum wire gauge required. See wire gauge c art below.
4. CAUTION! Before connecting power wires c eck for proper operating
voltage at opening wit a volt meter. Voltage must be wit in +/- 10%
of strike operating voltage for proper operation.
5. Configure strike for 12 or 24VDC operation. Refer to pigtail power
connector wiring in Fig. 1, Page 3. Connect wires to power source.
6. To install t e strike into t e frame opening:
A) Position t e wiring eit er down or up or toward t e back of t e
ollow metal frame. Make sure wires are completely clear of strike,
so t ey are not pinc ed w en mounting strike in t e frame.
B) Insert mounting screws t roug t e faceplate and secure into
mounting tabs.
7. After installation c eck orizontal alignment. T ere s ould be 1/32”
allowable movement w en t e door is pulled toward t e keeper.
8. ALIGNMENT ADJUSTMENT: Loosen mounting screws, s ift strike
body be ind faceplate orizontally as s own in Fig. 3A, page 3,
t en tig ten mounting screws.
9. For excessive orizontal alignment issues, remove s im filer bar from
t e keeper as s own in Fig. 3B, page 3
10. T e Electric Door Strike MUST be installed in suc a way and in suc a
location so as not to impair t e operation of an emergency exit or panic
ardware mounted on t e door.
OPTIONAL MONITORING OUTPUTS:
LC (Keeper Deadlocked onitor)
Signals keeper is closed and deadlocked and/or unlocked.
LB (Latch Bolt onitor)
Signals latc is extended into strike and/or retracted.
DB (Deadbolt onitor)
Signals deadbolt is extended into strike and /or retracted.
55-A for cylindrical locksets
Wit 1/2" to 3/4" latc .
55-B / 55-C For mortise
locksets wit up to a 3/4" latc
55-D / 55-E / 55-F for mortise
locksets wit latc and deadbolt
55-ABC Universal Strike Pak for
multiple cylindrical and mortise
lockset applications.
Monitoring outputs: Minimum 22 Gage wire recommended
OPERATION:
Fail-Secure (Power-to-Unlock): Unlocked w en energized.
Locked w en de-energized and during power failure.
Application: For non fire rated and fire rated doors (exception,
may not be used on stairwell doors). May not be maintained in
t e unlocked (energized) state w en used wit fire rated doors.
Fail-Safe (Power-to-Lock): Locked w en energized. Unlocked
w en de-energized and during power failure.
Application: Non-fire rated doors only.
CAUTION: Fail-safe is not permitted wit t e UL Fire Door
Accessory label.
Strike Input - Minimum Wire Gauge Requirements
Voltage 100 ft 150 ft 200 ft 250 ft 300 ft
12VDC 18 Ga 16 Ga 14 Ga 14 Ga ---
24VDC 18 Ga 18 Ga 18 Ga 16 Ga 16 Ga
Warnock Hersey Tested according to:
UL 10C, 3 Hr Fire Rated (Fail-Secure only).
UL Tested according to:
UL 1034 Burglary-Resistant
801 Avenida Acaso, Camarillo, Ca. 93012 • (805) 494-0622 •
www.sdcsec rity.com • E-mail: service@sdcsec rity.com
