Rev. 1 - 08/96
Copyright© 1996-2000, Alpha Communications®, All Rights Reserved
42 Central Drive • Farmingdale NY 11735-1202 • Phone (631) 777-5500 • Fax (631) 777-5599
TOLL-FREE 1-800-666-4800 • Web: www.AlphaCommunications.com • Email: email@example.com
DO-304 Electric Door Opener
Rim Type - Surface
The Alpha Communications® DO-304 surface
electric door opener is a low cost rim type door
opener that is designed to be used primarily onto
wooden or metal door frames.
The DO-304 can be used in right-handed or left-
handed installations, simply by turning the door
opener upside down, during installation.
When used with an 8-16VAC input, the DO-304
makes a buzzing sound, when activated. When
used with a 3-6VDC input, the DO-304 activates
• Operates on 8-16VAC or 3-6VDC standard
• Buzzes on AC operation and is silent for DC operation
• Reversible for right-handed or left-handed installa-
• Designed for Wooden or Metal door frames
• Non fail-safe operation standard
• 1000 Lbs. Holding Force
• Tested for 500,000 Cycles
NOTE: Many options are available for the DO-304
door opener, including different voltages (AC and
DC), different finishes, availability of continuous
duty activation, fail-safe operation, etc.
Alpha Communications® carries a complete
selection of electric door openers for virtually
any application. Please contact our sales dept.
for more detailed information.
Due to continuous product improvement, all colors, sizes, materi-
als, finishes and specifications are subject to change without notice.