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Serial WLAN Device Server

Buy a Serial WLAN Device Server for Serial to TCP/IP over Wi-Fi (RS232 / RS422 / RS485)

Need to connect a legacy serial device to modern Wi-Fi without running Ethernet? A Sollae Serial WLAN Device Server is a practical serial to TCP/IP solution that bridges RS232/RS422/RS485 equipment into IP networks so you can monitor, control, and integrate serial devices remotely. It’s the “buy once, deploy everywhere” upgrade when wiring is expensive, impossible, or slow.

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Why teams choose Sollae for Wi-Fi serial to TCP/IP
  • Soft AP setup: configure on-site with a phone/laptop even when no access point is available.
  • Enterprise Wi-Fi security: WPA-Enterprise options (EAP-TLS / EAP-TTLS / PEAP) on the CSW line.
  • IPv4/IPv6 dual stack: future-proof networking for modern IT/OT environments.
  • Industrial-ready features: RSSI mode (wireless signal strength) and external antenna support on key models.
  • Operational flexibility: TCP Server/Client and UDP modes for different serial-to-network workflows.

What a Wireless Serial to TCP/IP Gateway Is Used For (Real Projects)

Most buyers choose a serial to TCP/IP Wi-Fi device server to reduce site visits and modernize serial-only equipment without replacing it. Typical use cases include:

  • Remote monitoring & control of serial meters, controllers, displays, and instruments
  • Mobile / temporary installs where Ethernet cabling is not practical (rental sites, pilot projects, moving machinery)
  • Retrofits of older equipment so data can be collected by SCADA, dashboards, or IT monitoring tools
  • Hard-to-wire areas (large facilities, historic buildings, outdoor cabinets) where Wi-Fi wins on deployment speed

Serial to TCP/IP over Wi-Fi: Choose TCP Server, TCP Client, or UDP

Commercial searches for wireless serial converters are dominated by “mode” keywords because deployment success depends on the right connection model. Sollae models cover the most common patterns used by system integrators and IT/OT teams:

Mode cheat-sheet
  • TCP Server (serial to TCP/IP): your software connects to the device server (most common for stable links).
  • TCP Client (TCP/IP to serial): the device initiates the connection to your host (useful behind NAT / fixed server).
  • UDP Mode: lightweight messaging for telemetry, broadcast-like workflows, and simple integrations.
  • RFC2217 / COM-port control: for legacy applications that still expect “COM port” behavior.
  • Multi-monitoring (where supported): share one serial port with multiple monitoring channels (useful for teams/tools).

Compare Models: Pick the Right Serial WLAN Device Server

Model What it connects Standout features Best for
CSW-H85N
Serial WLAN Device Server 		RS232 / RS422 / RS485 → Wi-Fi (802.11 b/g) → IP Soft AP + SSL, IPv4/IPv6, WPA-Enterprise, multi-monitoring (up to 4 channels) Cost-sensitive deployments that still need enterprise security + encrypted transport
CSW-H85F
Serial WLAN Device Server 		RS232 / RS422 / RS485 → Wi-Fi (802.11 b/g) → IP Soft AP + RSSI, IPv4/IPv6, WPA-Enterprise, external antenna support Field installs where “easy Wi-Fi setup” and signal-quality visibility matter
CSW-H85K2
Serial WLAN Device Server 		RS232 / RS422 / RS485 → Wi-Fi (802.11 b/g) → IP RSSI + Soft AP, IPv4/IPv6, WPA-Enterprise, TCP/UDP modes, RFC2217 option; RS485/RS422 biasing + TVS and ±15kV ESD protection Industrial serial networks (RS485/RS422) where robustness and predictable behavior are priorities
CSC-H64
4-Port Serial Ethernet/WLAN Device Server 		4× RS232/RS422/RS485 → Ethernet or WLAN (USB Wi-Fi dongle required) 4 ports, Soft AP, Virtual COM (ezVSP), WPA-Enterprise; industrial temp range (-40°C to +85°C without WLAN adapter) + protection circuits Multi-device cabinets: consolidate several serial devices into one manageable network node

Security for Industrial Wi-Fi Deployments: WPA-Enterprise, Filtering, IPv6

Top-ranking “wireless serial device server” pages typically lead with enterprise security and deployment reliability (because Wi-Fi in OT is only useful if it’s controlled and stable). Sollae focuses on practical security features that matter in real rollouts:

  • WPA-Enterprise options for corporate Wi-Fi environments
  • IPv4/IPv6 dual stack for network compatibility
  • Soft AP commissioning to avoid “we can’t set it up on-site” delays
  • External antenna support where you need better reception or cabinet-friendly placement

Why Sollae vs Generic Serial-to-Wi-Fi Converters (and pricey enterprise brands)

Many low-cost serial Wi-Fi converters focus on “data transport” only—then you spend time fighting setup, signal issues, or security gaps. Premium brands can be excellent, but are often priced for large enterprise rollouts. Sollae sits in the sweet spot: industrial features integrators actually use, at a cost-effective level for B2B deployments.

  • Deployment-first setup: Soft AP is a big advantage for commissioning in the field
  • Enterprise Wi-Fi compatibility: WPA-Enterprise options when your IT policy is strict
  • Industrial fit: models designed for harsh environments (temperature/protection features where it matters)
  • Right-sized portfolio: 1-port CSW units for simple retrofits, 4-port CSC for cabinet consolidation
Buying tip: If you’re connecting one device, choose CSW (simpler, faster deployment). If you need multiple serial devices in one cabinet, choose the 4-port CSC-H64.

Serial to TCP/IP Wi-Fi Buyer Checklist (Before You Order)

  • Serial interface: RS232 vs RS485/RS422 (and whether your site needs biasing/robust protection).
  • Network mode: TCP Server vs TCP Client vs UDP (choose based on how your software connects).
  • Security requirements: prioritize WPA-Enterprise for corporate Wi-Fi; use filtering and strong credentials.
  • Commissioning method: Soft AP helps when there’s no infrastructure Wi-Fi available during install.
  • Port count: 1-port for simple retrofits, 4-port when you want consolidation.

Ready to deploy serial to TCP/IP over Wi-Fi? Pick your Sollae Serial WLAN Device Server above — or start with a 1-port CSW model for the quickest retrofit.

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