Series 120E Deadlatches are pin
tumbler, solenoid-operated locks for
swinging doors. Specify keying as
121 Keyed case side
122 Keyed cover side
126 Keyed both sides
Standard (1): Series 120E locks unlock
when the solenoid is energized by a
momentary-contact switch. Once
unlocked, the latchbolt is held
mechanically retracted until the door is
opened. It then extends automatically.
Without latchback (1a) 04 one switch;
05 two switches: Once unlocked, the
latchbolt is held retracted as long as the
solenoid is energized. A maintained
contact switch may be used to keep the
latchbolt retracted for an extended
period of time.
Knob release(2): 120E Deadlatches
may be specified with knob release on
one side, where the knob is always
active. Knob may be mounted on the
case side, or the cover side.
Key holdback (3): When unlocked by
key, the deadlatch remains retracted
until relocked by turning the key in the
opposite direction. Available one side
only. For locks keyed both sides,
available cover side only.
Note: Key cylinders for locks with key holdback
feature must be installed at the factory. This
function is not UL Listed for Fire Doors.
Series 120E Deadlatches are suited for
medium or maximum security
application including cell doors, sallyport
or egress doors, corridor or entrance
doors. Sensitive administration areas of
an institution may also warrant 120
Series locks. These jamb-mounted locks
are designed to be part of an electrical
system with remote operation and
monitoring to provide supervisory
personnel with optimum protection and
© 2017, Best Brothers Group. All rights reserved.