Product images are provided for reference and may not represent the exact model, configuration, or included components.

No Bots, Just Experts

Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.

Description

Digi International 70001851 Serial Device Server

Overview

The Digi 70001851 ONE SP is a single-port serial device server designed to convert RS-232, RS-422, and RS-485 serial connections to Ethernet. This accessory enables legacy serial devices and equipment to integrate into modern IP networks without replacing existing hardware. Ideal for connecting industrial controllers, meters, sensors, and legacy instrumentation to networked environments.

Compatibility

Supports RS-232, RS-422, and RS-485 serial protocols. Integrates with systems requiring serial-to-Ethernet bridging in industrial automation, building management, utility monitoring, and equipment integration scenarios. Suitable for installation in network closets, control cabinets, and distributed edge locations where serial device communication must be extended across IP infrastructure.

Port Configuration

Single serial port with selectable protocol support (RS-232/422/485). Flexible serial connectivity for diverse equipment types within a single deployment.

Specifications
Product Type: Serial Device Server
Operating Modes: RS-232/RS-422/RS-485
Ports: 1
Type: Serial Device Server
Warranty: 5-Year Warranty
Q&A
Reviews
Have Questions?

Digi International 70001851 One SP 1-Port RS-232/422/485

$360.00
$289.99

RELATED PRODUCTS

Save $90.01
Image coming soon
Add to Cart The item has been added

Digi International 70001862

Digi International 70001862 Digi One IA 1-Port RS-232/422/485

Single-port serial device server bridges RS-232/422/485 to Ethernet

  • DIGI ONE IA 1-port serial-to-network device server
  • RS-232 / RS-422 / RS-485 software-selectable
  • 0.7 lb compact form for industrial cabinet install
Usually Ships in 2-3 Weeks Free shipping over $499
$460.00 $369.99 Save $90.01
The item has been added Add to quote
$460.00 $369.99 Save $90.01
Save $90.01 Add to cart Add to quote
Save $64.01
Digi International 70002041 PortServer TS 1-Port RS-232
Add to Cart The item has been added

Digi International 70002041

Digi International 70002041 PortServer TS 1-Port RS-232

Single RS-232 serial device server with DIN rail mount for network access

  • 1-port RS-232 serial-to-Ethernet device server
  • DIN rail mountable for industrial cabinet install
  • Network-based serial data transmission
Usually Ships in 2-3 Weeks Free shipping over $499
$330.00 $265.99 Save $64.01
The item has been added Add to quote
$330.00 $265.99 Save $64.01
Save $64.01 Add to cart Add to quote

System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
Open Technical Resources