Product Specification Sheet APS227

Rev. 07/2013

SEQ-4N / SEQ-8N Automatic Sequential Switchers

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
Model SEQ-4N Shown
  • Automatic sequential switching
  • Vertical internal sequential switching
  • Manual overrides for "homing in" and "bypass"
  • Digital readout shows which camera location is on view
  • Variable time interval, adjustable from 0.5 through 35 seconds
Architects' And Engineers' Specifications
The sequential switcher(s) shall be Alpha Communications® model SEQ-4N / SEQ-8N or approved equivalent. Sequential switcher(s) shall feature manual overrides for "homing in" and "bypass" and display a digital readout showing which camera location is on view. Sequential switcher(s) shall also feature a variable time interval which is adjustable from 0.5 through 35.0 seconds. Sequential switcher(s) shall operate on 120V, 220V, or 240V.

Contractor shall observe all local and national electrical and building codes.

Check with applicable authorities regarding local and federal laws as they apply to party consent and video and/or audio recording.

Electrical Specifications

Video Bandwidth:
20 Mhz Maximum Video
Input Voltage:
2.0 V p-p
Input to Output:
Greater than 40 dB
2 isolated
Switching Interval:
0.5 - 35.0 seconds (dwell time)
Input Impedance:
75 ohm, terminated
Output Impedance:
75 ohm
Video Gain:
Video Connectors:
BNC (UG-1094)
Three (3) position toggle snap-action switches with wiping, self cleaning contacts 
Sequence Position Indicator:
Digital display
Supply Voltage:
120V, 220V and 240V, 50Hz or 60Hz
Power Consumption:
5 watts

Mechanical Specifications

Dimensions: 3.375" H x 10.50" W x 9.50" D
(60 mm x 265 mm x 240 mm)
Weight: 7.0 lbs. (3.3 kg)
Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.