Unit unlocks a door from a remotely
located control console by push button,
and the door starter pushes the door
open a few inches. It may then be
opened the rest of the distance
Individual doors may be opened by
prison paracentric key at the release

SKU: DKR-3 Category:


Type DKR.3 Operators are medium
security, unlocking systems for sliding
corridor doors not exceeding 300
DKR.3 Operators may be specified for
any corridor or entrance door requiring
remote electric unlocking with manual
movement of the door to open or
closed position.

© 2017, Best Brothers Group. All rights reserved.


Folger Adam

Locking System

Doors automatically snaplock and
deadlock upon closure at two points on
the top and bottom rear of the door.
Locking components are completely
concealed, and not subject to inmate
tampering. Components do not project
into door opening.

© 2017, Best Brothers Group. All rights reserved.


DKR Series Operators have been in
service since 1978, and tested to
500,000 cycles.

© 2017, Best Brothers Group. All rights reserved.

Standard Features

■ Motor voltage – 120 VAC.
■ Individual motor operation – Each
door is unlocked by its own motor.
■ Heavy duty construction – DKR.3
Operators are ruggedly built for the
detention environment.
■ Tamper-resistance – All housing
openings are baffled to preclude
inmate tampering.
■ Sloped-top housing – Eliminates
hiding of contraband.
Flat-top housing is provided where
operator must install close to ceiling.
■ Automatic deadlocking – Units
snaplock and automatically deadlock
when closed.
■ Indication switch – Monitors the
deadlocked condition of both locking
■ Mechanical release – A No. 12
Deadlock in the release column
provides mechanical unlocking of the

© 2017, Best Brothers Group. All rights reserved.

Optional Features

■ Key switch operation – An
electrically operated key switch may
be added to the release column for
local electric operation.
■ Electric controls – A control console
with push button switch, red and
green indication lamps, and power
cut-off switch may be provided.
■ Interlocking – Wiring and adaptations
may be made to permit interlocking
of two or more doors in a sallyport or
vestibule application. Prevents
electrical operation of any other
interlocked door.
■ Custom graphic consoles – In many
cases, corridor operators are merely
one part of a complete security
system. For these larger installations,
or those with particular needs,
custom-built control consoles may
easily be provided with floor plan
graphics screened on the control
panel, and an array of specialized
■ G90 galvanized finish available.

© 2017, Best Brothers Group. All rights reserved.


■ Unlocking system –
Type: Manual.
Motor: 120 VAC, 60 HZ.
Hanger and guides: 1/4″ thick
Rollers: Anti-friction ball bearings
with hardened members and
grease shield.
Finish: USP.
■ Mechanism housing/covers –
Housing: 7-gauge steel.
Housing covers: 10-gauge steel.
Vertical lock column housing:
7-gauge steel.
Vertical lock column cover:
10-gauge steel.
Mechanical release column:
7-gauge steel with 10-gauge steel
front receiver.
Finish: USP

© 2017, Best Brothers Group. All rights reserved.