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Model 7277 DB9 A/B Switch, Contact Control Remote Port

The Model 7277 DB9 A/B Switch with Contact Control Remote Port allows accessing two separate devices, ports A and B, via connection through a device connected to the Common port.

Manufacturer - Electro Standards Laboratories
Model # - 7277
SKU - 307277
Submitted By - Electro Standards Laboratories (Manufacturer)
Country - United States
Category - Network Switch : A/B Switches : DB9

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7277 DB9 A/B Switch, Contact Closure Remote PortNetwork Cables for Model 7277 and other apps


Connectors :   (3) DB9(F): A, B, COM
Front Panel Control :   (1) Pushbutton to select switch position
Remote Control Port :   (1) DB9(F): Contact Closure Signals
Front Panel Display :   (2) LEDs: A, B: Position, Power Status
UL Approved Power Mod :   120 VAC, 60Hz supplies 12VDC, 500mA
Dimensions: Rackmount :   19"W x 1.75"H x 8"D (48 X 4 X 20 cm)
Weight :   Approx: 4.5 lbs. (2 Kg)


Model 7277 DB9 A/B Switch, with Contact Control Remote Port, 1U Rackmount

The Model 7277 DB9 A/B Switch with Contact Control Remote Port allows the user the capability of accessing two separate devices, ports A and B, via connection through a device connected to the Common port.

The switch may be controlled manually via the front panel pushbutton or remotely from a DB9 Control port located on the rear of the unit.

The front panel LED display indicates the switch position and power status.


The switch ports are transparent to all data.
The DB9 Remote Control port provides access to remotely switch the unit by dry contact open/close logic.
Front panel pushbutton control can be locked out remotely through contact closure.
The unit maintains last set position on power loss and continues to pass data.
Front panel LEDs display the current switch position and the switch power status.
All (9) signals of the interface are switched.


PORT CONNECTORS: (3) DB9(F) connectors on rear panel labeled A, B, and COM.
FRONT PANEL CONTROL: Manual pushbutton allows selection of switch position.
REMOTE CONTROL PORT: (1) DB9(F) Control connector accepts contact closure
signals from a remote device.
FRONT PANEL DISPLAY: (2) LED's A, B, indicate switch state and power status.
POWER: UL approved 120 VAC, 60 Hz, wall mount power module supplies 12 VDC, 500 mA to the unit.
DIMENSIONS: Rackmount, 19" W x 1.75" H x 8" D. (48.3 X 4.4 X 20.3 cm)
WEIGHT: Approximately 4.5 lbs (2 Kg). (2 Kg)

This high-quality network switch is available to city, state, and federal government purchasers at a discounted price and favorable payment and shipping terms via GSA Schedule GS-35F-0286V.

(Cat No 517277) CE and UL listed wall mount power module, 100VAC/240VAC, 50Hz/60Hz in place of standard 115VAC or 120VAC power module. Ideal for international applications. See Accessories tab for more information.

All ESL Remotely Controllable Data Network Switches are available for export.

Electro Standards welcomes International inquiries: commutateur de données, interruptor de datos, dati interruttore, Przełącznik danych, comutador de dados.

Electro Standards’ products are integrated into systems worldwide, including but not limited to:

Australia, Canada, Chile, Denmark, France, Germany, Greece, Israel, New Zealand, Philippines, Puerto Rico, Romania, Singapore, South Korea, South Africa, Spain, Switzerland, Thailand, The Netherlands, UAE, UK.


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