Description
The SN3401P is a secure serial device server that connects legacy RS-232 / RS-422 / RS-485 equipment to an IP network. It provides remote access to serial devices over Ethernet, enabling centralized monitoring and control. The unit supports secured connection modes and PoE power options for flexible deployment.
Key features include multiple secured operation modes – Secure Real COM, Secure TCP Server / Client, Secure Serial Tunneling Server / Client, Console Management SSH, and Console Management Direct SSH. The device also supports standard modes such as Real COM, TCP Server / Client, Serial Tunneling, UDP, and Telnet-based console management. Real COM, Real TTY, and Fixed TTY drivers are available for Windows, Linux, and UNIX platforms to simplify host integration.
Performance and resilience are enhanced by hardware features such as redundant power input via power jack and terminal block and IEEE 802.3af PoE PD compliance. The SN3401P integrates surge protection for serial, Ethernet, and power circuits and includes a 64 KB port buffer to prevent data loss during network interruptions. It supports an extensive range of baud rates up to 921.6 kbps for high-speed serial links.
Connectivity options include a single configurable RS-232 / RS-422 / RS-485 serial port with software-configurable 120 ohm termination and selectable pull-up/pull-down resistors for RS-485 signaling. The unit supports Modbus gateway functionality to translate between Modbus TCP and Modbus RTU / ASCII, enabling integration of serial Modbus devices into Modbus TCP networks. Console access is available via Java viewer or third-party clients such as PuTTY.
The SN3401P is suited to industrial process control, telecom, access control, and remote site management applications where secure remote serial access is required. It supports multiple simultaneous connections – up to 16 connections per port – and provides online/offline device detection with event notifications for status monitoring. Authentication options include local, remote, and third-party methods such as RADIUS to meet enterprise security requirements.
Installation and management are straightforward with a web-based GUI, quick setup wizard, and terminal-based menu UI via Telnet / SSH. The device supports SNMP v1 / v2c, NTP time synchronization, system and port logging to internal memory or a Syslog server, and firmware upgrade and configuration backup/restore. Multi-language web GUI and robust mounting options including DIN-rail, wall, rack, and desktop provide deployment flexibility.
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.
UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.
USPS Priority Mail/USPS Express Mail
For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.
Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.
International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.
Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.
We Offer A 30-Day Money Back Guarantee:
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.
Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.
Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.
No Returns/Exchanges on the following:
- TVs and monitors 20" and larger
- Special Order merchandise
- Any item indicated on the website as non-returnable
For more information see our official Return Policy
