User guide

FA Rev. 02-10 A15
For more information, please call 210.533.1231.
Description______________
Series 120M Deadlatches are pin
tumbler, motor-operated electro-
mechanical locks for swinging doors.
Specify keying as follows:
121 Keyed case side
122 Keyed cover side
126 Keyed both sides
Applications_____________
Series 120M Deadlatches are jamb-
mounted 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.
Operations______________
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
rating.
Note: Key cylinders for locks with key holdback
feature must be installed at the factory.
Testing__________________
120M Series Deadlatches and Maxi-
Mogul
®
Key Cylinders have been tested
to 1,000,000 operations.
Standards Compliance___
All Series 120M locks are UL Listed as
Burglary-Resistant Mechanisms and Fire
Door Accessories to a three-hour rating,
except Key holdback function, which is
not Fire rated.
Maxi-Mogul
®
Key Cylinders meet UL437
requirements.
ASTM F1577 Grade 1 - Impact
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
faceplate.

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.
FOLGER ADAM ELECTRIC LOCKS
Key: Mogul
Door: Swinging
Security
Level: Medium/Maximum
120M DEADLATCH