B2B Tech Supply
  • Networking
    • Transmission Specialty Hardware
  • Video Surveillance
    • Security Cameras
    • Surveillance Video Recorders
    • Video Surveillance Prepackaged Kits
    • IP Surveillance Video Recording Software
    • CMS, Mobile and Video Analytics Software
    • Video Surveillance Keyboards and Joysticks
    • Video Encoders and Decoders
    • Power
    • License Plate Capture and Recognition
  • Access Control
    • Access Control Systems
    • Access Control Credentials
    • Access Control Keypads
    • Exit Devices, Buttons and Switches
    • Locking Devices
  • Alarm Systems
    • EDGE Series Systems and Components
    • GC2e Series Systems and Components
    • Rely Series Control Panels and Kits
    • Motion Sensors
    • Contacts and Switches
    • Glass Break and Shock Sensors
    • Alarm System Notification Devices
    • Push Buttons, Disconnect Cords and Sensors
    • Personal Safety and Alarm Systems
    • Driveway Alert Systems
    • STI Alarms and Chimes
    • STI Alarm and Chime Accessories
    • Potter Door Annunciators and People Counters
  • Intercom
    • Telephone Entry Intercom Systems
  • Push Buttons
    • 3-in-1 Button Kits
    • Abort Buttons
    • Custom Buttons
    • Emergency Buttons
    • Emergency Exit Buttons
    • Emergency Power Off Buttons
    • Emergency Stop Buttons
    • Evacuation Buttons
    • Exit Buttons
    • Fire Buttons
    • Fuel Pump Shut-Down Buttons
    • HVAC Shut-Down Buttons
    • Lockdown Buttons
    • No Text Buttons
    • Push to Exit Buttons
    • Alert Point Buttons
    • Global Reset Series Buttons
    • Universal Buttons
    • Button Covers
    • Button Enclosures
    • Button Accessories
    • Spanish Buttons
  • More
    • AV / Automation
    • Fire and Safety
    • Tools
    • Boxes, Cabinets and Enclosures
    • 2GIG Accessories
    • CG3/GC3e Radios and Antennas
    • Dormakaba RCI Electromagnetic Locks
    • Dormakaba RCI Electric Strikes
    • Dormakaba RCI Electric Locks
    • Dormakaba RCI Power Supplies
    • Dormakaba RCI Switches
    • Dormakaba RCI Keypads & Readers
    • Dormakaba RCI Exit Devices
    • Dormakaba RCI Specialty Locks
    • Linear Access Control
    • Linear Audio/Video Distribution
    • Linear Gate Operators
    • Linear Intercom & Communication Solutions
    • Linear Radio Control
    • Linear Security Solutions
    • Linear Video Surveillance
    • Seco-Larm Access Control
    • Seco-Larm Enforcer Video
    • Seco-Larm CCTV Accessories
    • Seco-Larm RF Wireless
    • Seco-Larm Burglar Security
    • Seco-Larm Audio/Video
    • Seco-Larm Vehicle Security
    • STI Accessories
    • STI Services
    • Deals of the Week
  • Frequently Asked Questions
  • Privacy Policy
  • Returns
  • Delivery Information
  • Sign in
  • Register
  • US Dollars
Vertical Categories
B2B Tech Supply
0
Over 500,000 items available for wholesale purchase.
  • My Account
    • Sign in
    • Register
  • Wish Lists
  • Compare
  • Check out
B2B Tech Supply
  • Hello, sign in My Account
    • Sign in
    • Register
  • My Cart

    0 items $0.00
All Categories
  • Networking
    • Transmission Specialty Hardware
  • Video Surveillance
    • Security Cameras
    • Surveillance Video Recorders
    • Video Surveillance Prepackaged Kits
    • IP Surveillance Video Recording Software
    • CMS, Mobile and Video Analytics Software
    • Video Surveillance Keyboards and Joysticks
    • Video Encoders and Decoders
    • Power
    • License Plate Capture and Recognition
  • Access Control
    • Access Control Systems
    • Access Control Credentials
    • Access Control Keypads
    • Exit Devices, Buttons and Switches
    • Locking Devices
  • Alarm Systems
    • EDGE Series Systems and Components
    • GC2e Series Systems and Components
    • Rely Series Control Panels and Kits
    • Motion Sensors
    • Contacts and Switches
    • Glass Break and Shock Sensors
    • Alarm System Notification Devices
    • Push Buttons, Disconnect Cords and Sensors
    • Personal Safety and Alarm Systems
    • Driveway Alert Systems
    • STI Alarms and Chimes
    • STI Alarm and Chime Accessories
    • Potter Door Annunciators and People Counters
  • Intercom
    • Telephone Entry Intercom Systems
  • Push Buttons
    • 3-in-1 Button Kits
    • Abort Buttons
    • Custom Buttons
    • Emergency Buttons
    • Emergency Exit Buttons
    • Emergency Power Off Buttons
    • Emergency Stop Buttons
    • Evacuation Buttons
    • Exit Buttons
    • Fire Buttons
    • Fuel Pump Shut-Down Buttons
    • HVAC Shut-Down Buttons
    • Lockdown Buttons
    • No Text Buttons
    • Push to Exit Buttons
    • Alert Point Buttons
    • Global Reset Series Buttons
    • Universal Buttons
    • Button Covers
    • Button Enclosures
    • Button Accessories
    • Spanish Buttons
  • More
    • AV / Automation
    • Fire and Safety
    • Tools
    • Boxes, Cabinets and Enclosures
    • 2GIG Accessories
    • CG3/GC3e Radios and Antennas
    • Dormakaba RCI Electromagnetic Locks
    • Dormakaba RCI Electric Strikes
    • Dormakaba RCI Electric Locks
    • Dormakaba RCI Power Supplies
    • Dormakaba RCI Switches
    • Dormakaba RCI Keypads & Readers
    • Dormakaba RCI Exit Devices
    • Dormakaba RCI Specialty Locks
    • Linear Access Control
    • Linear Audio/Video Distribution
    • Linear Gate Operators
    • Linear Intercom & Communication Solutions
    • Linear Radio Control
    • Linear Security Solutions
    • Linear Video Surveillance
    • Seco-Larm Access Control
    • Seco-Larm Enforcer Video
    • Seco-Larm CCTV Accessories
    • Seco-Larm RF Wireless
    • Seco-Larm Burglar Security
    • Seco-Larm Audio/Video
    • Seco-Larm Vehicle Security
    • STI Accessories
    • STI Services
    • Deals of the Week
  • Home
  • Frequently Asked Questions
  • Privacy Policy
  • Returns
  • Delivery Information
  • Home
  • Video Surveillance
  • Security Cameras
  • Security Camera Accessories
  • Geovision Accessories
  • Geovision IO
  • 55-NETCR-320 Geovision GV-NET CARD V3 RS-232 to RS-485 Converter w/ USB Support
All Categories
  • Networking
    • Transmission Specialty Hardware
  • Video Surveillance
    • Security Cameras
    • Surveillance Video Recorders
    • Video Surveillance Prepackaged Kits
    • IP Surveillance Video Recording Software
    • CMS, Mobile and Video Analytics Software
    • Video Surveillance Keyboards and Joysticks
    • Video Encoders and Decoders
    • Power
    • License Plate Capture and Recognition
  • Access Control
    • Access Control Systems
    • Access Control Credentials
    • Access Control Keypads
    • Exit Devices, Buttons and Switches
    • Locking Devices
  • Alarm Systems
    • EDGE Series Systems and Components
    • GC2e Series Systems and Components
    • Rely Series Control Panels and Kits
    • Motion Sensors
    • Contacts and Switches
    • Glass Break and Shock Sensors
    • Alarm System Notification Devices
    • Push Buttons, Disconnect Cords and Sensors
    • Personal Safety and Alarm Systems
    • Driveway Alert Systems
    • STI Alarms and Chimes
    • STI Alarm and Chime Accessories
    • Potter Door Annunciators and People Counters
  • Intercom
    • Telephone Entry Intercom Systems
  • Push Buttons
    • 3-in-1 Button Kits
    • Abort Buttons
    • Custom Buttons
    • Emergency Buttons
    • Emergency Exit Buttons
    • Emergency Power Off Buttons
    • Emergency Stop Buttons
    • Evacuation Buttons
    • Exit Buttons
    • Fire Buttons
    • Fuel Pump Shut-Down Buttons
    • HVAC Shut-Down Buttons
    • Lockdown Buttons
    • No Text Buttons
    • Push to Exit Buttons
    • Alert Point Buttons
    • Global Reset Series Buttons
    • Universal Buttons
    • Button Covers
    • Button Enclosures
    • Button Accessories
    • Spanish Buttons
  • More
    • AV / Automation
    • Fire and Safety
    • Tools
    • Boxes, Cabinets and Enclosures
    • 2GIG Accessories
    • CG3/GC3e Radios and Antennas
    • Dormakaba RCI Electromagnetic Locks
    • Dormakaba RCI Electric Strikes
    • Dormakaba RCI Electric Locks
    • Dormakaba RCI Power Supplies
    • Dormakaba RCI Switches
    • Dormakaba RCI Keypads & Readers
    • Dormakaba RCI Exit Devices
    • Dormakaba RCI Specialty Locks
    • Linear Access Control
    • Linear Audio/Video Distribution
    • Linear Gate Operators
    • Linear Intercom & Communication Solutions
    • Linear Radio Control
    • Linear Security Solutions
    • Linear Video Surveillance
    • Seco-Larm Access Control
    • Seco-Larm Enforcer Video
    • Seco-Larm CCTV Accessories
    • Seco-Larm RF Wireless
    • Seco-Larm Burglar Security
    • Seco-Larm Audio/Video
    • Seco-Larm Vehicle Security
    • STI Accessories
    • STI Services
    • Deals of the Week

Best Sellers

SS2231PO-EN STI Yellow Indoor/Outdoor Flush Turn-to-Reset Stopper Station with EMERGENCY POWER OFF Label English

SS2231PO-EN STI Yellow Indoor/Outdoor Flush Turn-to-Reset Stopper Station with EMERGENCY POWER OFF Label English

STI

MSRP: $146.97
Now: $101.00
Was:
1610227 Potter MTW-120MH MT Mini Horn 120VAC - White

1610227 Potter MTW-120MH MT Mini Horn 120VAC - White

Potter

MSRP: $60.00
Now: $54.00
Was:
P82WLS Kantech ioProx 2-Button Transmitter - MIN QTY 10

P82WLS Kantech ioProx 2-Button Transmitter - MIN QTY 10

Kantech

MSRP: $70.00
Now: $56.00
Was:
KIT-E10198 STI Normally Closed Contact for Switch Configuration 0, 1, 3 and 4

KIT-E10198 STI Normally Closed Contact for Switch Configuration 0, 1, 3 and 4

STI

MSRP:
Now: $14.00
Was:
SS2229HV-EN STI Yellow Indoor Only Flush or Surface Turn-to-Reset (Illuminated) Stopper Station with HVAC SHUT DOWN Label English

SS2229HV-EN STI Yellow Indoor Only Flush or Surface Turn-to-Reset (Illuminated) Stopper Station with HVAC SHUT DOWN Label English

STI

MSRP: $92.17
Now: $69.00
Was:
4890070 Potter LFH-24R Red 520 HZ Low Frequency Sounder

4890070 Potter LFH-24R Red 520 HZ Low Frequency Sounder

Potter

MSRP: $101.00
Now: $78.00
Was:

Stop the Spread of Germs

No Touch and Push Buttons
No Touch and Push Buttons
This cast aluminum touch free button applies NoTouch technology which helps reduce the spread of germs in any public building. To exit, a person must simply wave their hand in front of the device. The infrared will detect the motion and unlatch the time adjustable door.
View Products
Sidebar
55-NETCR-320 Geovision GV-NET CARD V3 RS-232 to RS-485 Converter w/ USB Support
  • 55-NETCR-320 Geovision GV-NET CARD V3 RS-232 to RS-485 Converter w/ USB Support

55-NETCR-320 Geovision GV-NET CARD V3 RS-232 to RS-485 Converter w/ USB Support

(No reviews yet) Write a Review

Write a Review

55-NETCR-320 Geovision GV-NET CARD V3 RS-232 to RS-485 Converter w/ USB Support
Geovision
55-NETCR-320 Geovision GV-NET CARD V3 RS-232 to RS-485 Converter w/ USB Support

MSRP:
Now: $30.00
Was:
(You save )
Brand
Geovision
SKU:
55-NETCR-320
UPC:
4712896440308

Adding to cart… The item has been added
Add to Wish List
  • Create New Wish List
  • Facebook
  • Email
  • Print
  • Twitter
  • Pinterest
  • Description
  • 0 Reviews

The GV-NET Card is a RS-485 / RS-232 interface converter that can be installed inside a PC. It also supports the connection via the USB port.

 

Model Number: 55-NETCR-310

 

Specifications:

  • RS-232 to DB9 (RS-232)
  • RJ-11 to USB
  • 3-pin internal USB to internal USB
  • Communication: RS-485 1,200~115,200 bps; USB
  • Environmental Conditions: 0~50 C, 5%~95% (non-condensing)
  • Dimensions: 97 (W) x 90 (H) mm
Write a Review

0 Reviews Hide Reviews Show Reviews

  • Related Products
55-IOCRD-320 Geovision GV-NET I/O V3.2 - 4 Alarm Inputs & 4 Relay Outputs plus RS-485 to RS-232 Converter w/ USB Support

Geovision

55-IOCRD-320 Geovision GV-NET I/O V3.2 - 4 Alarm Inputs & 4 Relay Outputs plus RS-485 to RS-232 Converter w/ USB Support

MSRP: $90.00
Now: $69.00
Was:
Features:Model Number: GV-Net/IO Card Manufacturer SKU Number: 55-IOCRD-320 Sales Part Number: 400-IOCRD-000 4 inputs and 4 relay outputs 250VAC/30VDC USB Port Specifications OS Supported...
Add to Cart The item has been added
IEI232-485 Linear RS-232 to RS-485 Interface

Linear

IEI232-485 Linear RS-232 to RS-485 Interface

MSRP: $115.00
Now: $96.00
Was:
Features:Dimensions 2.74" W x 4.6" L x 1.4" HOperating Temperature -20 to 130 FPower: The converter can be powered with 12 to 24 volts AC or DCRS-232 to RS-485 interface for prox.pad Plus and Max3...
Add to Cart The item has been added
VC-485 Kantech Multi-Function RS-232 to RS-485 Communication Interface

Kantech

VC-485 Kantech Multi-Function RS-232 to RS-485 Communication Interface

MSRP: $295.00
Now: $220.00
Was:
The VC-485 Communication Interface is an RS-232/RS-485 protocol converter primarily used to connect a PC to a KT-100/ KT-200/ KT-300 controller. The maximum bus length is 5 km (18,000 ft, when line...
Add to Cart The item has been added
USB-485 Kantech USB to RS-485 Communication Interface

Kantech

USB-485 Kantech USB to RS-485 Communication Interface

MSRP: $250.00
Now: $187.00
Was:
The USB-485 Communication Interface is a protocol converter used to connect a PC's USB port to the RS-485 input on your Kantech controller KT-100/ KT-200/ KT-300. The maximum bus length is 1,200 m...
Add to Cart The item has been added
55-ENPOS00-310U Geovision GV-Data Capture V3

Geovision

55-ENPOS00-310U Geovision GV-Data Capture V3

MSRP: $240.00
Now: $150.00
Was:
Model Number: GV-Data Capture Box V3 Manufacturer SKU Number: 55-ENPOS00-310U Sales Part Number: 400-POS00-V30 GV-Data Capture V3.1E is an innovated Ethernet version of the Data Capture Box allowing...
Add to Cart The item has been added
B2B Tech Supply
Addresses : B2B Tech Supply
339 Hicksville Rd. #221
Bethpage, NY 11714
Email: info@b2btechsupply.com

Information

  • Frequently Asked Questions
  • Privacy Policy
  • Returns
  • Delivery Information
  • Terms & Conditions
  • Sitemap

Brands

  • STI
  • Dormakaba
  • Potter
  • Geovision
  • Mier
  • View All

All Categories

  • Networking
  • Video Surveillance
  • Access Control
  • Alarm Systems
  • Intercom
  • View All

Sign Up For Newsletter

Get the latest updates on new products and upcoming sales

© 2025 B2B Tech Supply