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 CDX® Commercial Operator 


CDX Counter Door Operator 

The CDX® is UL 325 2010 compliant and provides durable and reliable operation. This light duty door operator is designed for use on counter and counter fire door applications. Common applications include factories, schools, concessions, hospitals, cafeterias and retail settings.


Front of hood (chain/sprocket coupling to door)


1/2 horsepower, 115V AC single phase motor with high start torque, intermittent-duty, NEMA 42 frame open drip-proof construction, instant reversing with automatic reset thermal overload

Drive reduction

Helical gear primary reduction and hardened bevel gear secondary reduction

Power train

Oil impregnated bushing to ensure long life

Cycles per hour

Operator tested and approved by UL for 5 cycles per hour at rated load of 70 ft-lbs/sec

Limit system

Adjustable linear type; remains synchronized with door during release operation


16-character LCD display provides easy-to-read set-up and diagnostics with backlight for low-light conditions

Cycle counter

Displays total cycles logged over the operator's lifetime to support warranty and service functions

Independent timers

Automatic maximum run timer stops the close function if present run time is exceeded, allowing for inspection

Control system

On-board Open, Close and Stop buttons make set-up and testing simple, saving time during installation

Control buttons

Call Mode/Run Mode, Backlight, Scroll Up/Down, Set/Clear


One year limited warranty


Counter door

Counter fire door

Radio hookups

Option available for fast, simple radio frequency connectivity to enable remote door operation

Hand crank

Optional on standard counter door; comes with electrical interlock


Option available on Counter fire door only. Centrifugal drum type governor built into operator to control drop speed without disconnection from door


Option available on Counter fire door only. Spring-loaded for automatic release of door by optional fuse link, Fire Sentinel® or similar fire detection system

Accessories for CDX


interface modules

Auxiliary Output Module - this plug-in module will provide several auxiliary sets of dry contacts that are microprocessor controlled. Outputs can be configured using the on-board keypad.

To maintain compliance when using a sensing edge as a primary safety device with our X-Series commercial operators labeled UL 325 2010, you must use one of the following modules:

timer to close module

Timer to Close Module - provides auxiliary control inputs, auxiliary safety inputs, auxiliary timer hold input, and an automatic door closing feature with a user-selectable time-delay. Safety inputs can be enabled or disabled using the on-board keypad. A sensing device must be used with this module.

monitored edge interface module

Monitored Edge Interface Module – provides an interface between two-wire monitored sensing edges and our X-Series operators. This module allows for the connection of a two-wire monitored sensing edge to be connected to the ODC STB terminals. Compatible for use on Miller Edge electronic two-wire monitored edge models ME, MT and MU.

Safety Accessories

Additional safety options include:
Fire Sentinel® time delay release device
Photoelectric or ionization-type smoke detectors
(with or without heat detector)
Solid-state horn, strobe or voice enunciators

monitored retro-reflective photo-eye

Monitored Retro-reflective Photo-eye - This photo-eye utilizes interference reduction technology, that enables further reduction of interference from reflective surfaces.