120M Deadlatch Electro-Mechanical Locks

Standard Features_______
■ Motor voltage – 120 VAC
■ Superior durability – Working parts
of stainless steel afford greater
strength and corrosion resistance.
■ Standard lock size – All models use
the same size case, cover and
mounting holes for simplified
installation and frame preparation.
■ External two-piece plug connector –
All models install without cover
removal. Simple plug-in connection to
field wiring.
■ External mounting holes – Easy
installation eliminates the need for
cover removal.
■ Standard lock – Mounts behind
frame and does not require a
■ 1″ throw latchbolt – Offers greater
security. Each bolt is hardened to
resist sawing. When latchbolt is
engaged in strike, bevel is concealed
to prevent picking.
■ Mechanical unlocking by key –
Specify Folger Adam Mogul cylinders,
Maxi-Mogul® high security cylinders or
other Mogul cylinders.

SKU: 120M Categories: ,


Series 120M Deadlatches are pin
tumbler, motor-operated electromechanical
locks for swinging doors.
Specify keying as follows:
121 Keyed case side
122 Keyed cover side
126 Keyed both sides
Standard (1): Series 120M locks unlock
when the motor is energized by a
momentary-contact switch. Once
unlocked, the latchbolt is held
mechanically retracted until the door is
opened. It then extends automatically.
Knob release(2): 120M 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. This function is not UL Listed for
Fire Door Accessories to a three-hour
Note: Key cylinders for locks with key holdback
feature must be installed at the factory.
Series 120M Deadlatches are jambmounted
and designed for use in
medium or maximum security
applications to secure cell doors,
sallyports, corridors or entrance doors.
The motor provides smooth, quiet
operation and positive locking. 120M
locks are designed to be part of an
electrical system with remote operation
and monitoring. They afford flexibility
and safety to institution staff.

© 2017, Best Brothers Group. All rights reserved.


Folger Adam


■ Case and cover – 10 gauge steel.
■ Latchbolt – Investment-cast
stainless steel, hardened. 1″
■ Deadlock lever – Stainless
steel, adjustable for door gap
■ Bolt opening – Does not allow
access to mechanism.
■ Roller bolt – Investment-cast
stainless steel with stainless steel
■ Operating lever – Stainless steel
to operate with solenoid.
■ Strike – Investment-cast stainless
steel, attached with screws in two
■ Motor – 120 VAC continuous
duty, 24 VAC or 24 VDC optional,
synchronous-type gearmotor.
■ Springs – Stainless steel.

© 2017, Best Brothers Group. All rights reserved.

Electrical Characteristics

AC motors – Synchronous-type
gearmotor with brake.
Ratings: 120 VAC: 60 Hz, 1.3
amps at full load.
■ DC motors – Permanent-magnet
Ratings: 24 VDC, 2.2 amps at full
■ Switch – SPDT, UL Listed,
15 amps @ 125 or 250 VAC.

© 2017, Best Brothers Group. All rights reserved.