SDC 30-4 ELECTRIC STRIKE - Manual (Page 2)

P:\INSTALLATION INST\ELECTRIC STRIKE\INST-30-4.vsd Rev - 01/11 Page 2
OPTIONAL FEATURES;
1. LBM SWITCH (Latch Bolt Monitor) – A switch operated by the switch tripper that signals
whether or not the latch bolt is extended into the strike.
2. LCM SWITCH (Locking Cam Monitor) – A switch operated by the roll pin on the locking cam
that monitors the position of the locking cam and signals that the strike is either locked or
unlocked.
3. LCBM SWITCH (Locking Cam and Latch Bolt Monitor) – A switch operated by the LCM
switch tripper and the LBM switch tripper that signals that the strike is locked and the
latch bolt is engaged.
4. LCBMA SWITCH (Locking Cam and Latch Bolt Monitor, wired separately) – This is the same
as the LCBM with an additional switch operated by the LBM switch tripper.
5. KEEPERS – There is a standard type for each model 300 strike. Optional keepers are
available for some models.
6. SOLENOID VOLTAGE – 24VDC is standard. Optional voltages available are: 12 or 115VDC,
6, 12, 24, 48 or 115VAC. NOTE: UL requires that a junction box be use with 48 and 120 volt
strikes if they are not installed in a back box.
7. SILENT OPERATION (SO) – Silent operation is recommended for AC non-fail safe strikes
that are to be energized for extended periods of time. All silent operation strikes are operated
by DC solenoids. When control power source is AC, the strike is supplied with an externally
attached bridge rectifier.
8. FAIL SAFE – The strike is locked when energized. This feature should be used for
applications that require automatic unlocking in case of power failure. All fail safe strikes are
operated by DC solenoids and are silent operation.
CAUTION: Fail safe is not permitted with the UL Fire Door Accessory label.
9. MOUNTING TAB – The mounting tab is designed to be used with the 30 series electric
strikes when mounting in metal frames.
10. ASTRAGAL - A lock guard designed to prevent tampering with the strike keeper and the
latch bolt.
INSTALLATION INSTRUCTIONS 30-4 ELECTRIC STRIKE