Brainboxes ES Series Ethernet to Serial Adaptors

Brainboxes Brand: Brainboxes

The Brainboxes ES Series of Ethernet to serial adaptors includes models with screw terminals or 9-pin D connectors as well as models offering PoE (Power over Ethernet).

  • Ethernet to serial adaptors
  • 1 to 8 outputs
  • RS232 and RS422/485 outputs
  • Range includes PoE models
  • Industrial and DIN rail mount models
  • Brainboxes ES Series
Description Image Product Buy Pricing (Ex VAT) Number of Outputs Output Type(s) Removable Type Number of Inputs 2 Pinout Input Type
Brainboxes ES-020 Ethernet 1 Port RS232 10xScrew Terminals
Brainboxes ES-020 Ethernet 1 Port RS232 10xScrew Terminals
Standard range
Order code: 43-1274
MPN: ES-020

Available to back orderBack-order availability date - 23/07/2026
1+ £146.25
Price per unit Ex VAT 		1 RS232 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-246 1 Port RS232 Ethernet to Serial Adapter
Brainboxes ES-246 1 Port RS232 Ethernet to Serial Adapter
Standard range
Order code: 43-1266
MPN: ES-246

Despatched same day - 3 in stockAdditional quantity lead time 2 days
1+ £88.84
Price per unit Ex VAT 		1 RS232 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-701 4 Port RS232 Ethernet to Serial Adapter
Brainboxes ES-701 4 Port RS232 Ethernet to Serial Adapter
Standard range
Order code: 43-1272
MPN: ES-701

Available to back orderBack-order availability date - 23/07/2026
1+ £308.27
Price per unit Ex VAT 		4 RS232 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-279 8 Port RS232 Ethernet to Serial Adapter
Brainboxes ES-279 8 Port RS232 Ethernet to Serial Adapter
Standard range
Order code: 43-1270
MPN: ES-279

Out of stock1 due on 10/08/2026
1+ £470.25
Price per unit Ex VAT 		8 RS232 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-320 1 Port RS422/485 Ethernet to Serial Adapter
Brainboxes ES-320 1 Port RS422/485 Ethernet to Serial Adapter
Standard range
Order code: 43-1269
MPN: ES-320

Available to back orderBack-order availability date - 23/07/2026
1+ £98.24
Price per unit Ex VAT 		1 RS422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-346 4 Port RS422/485 Ethernet to Serial Adapter
Brainboxes ES-346 4 Port RS422/485 Ethernet to Serial Adapter
Standard range
Order code: 43-1271
MPN: ES-346

Available to back orderBack-order availability date - 23/07/2026
1+ £339.64
Price per unit Ex VAT 		4 RS422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-842 8 Port RS422/485 Ethernet to Serial Adapter
Brainboxes ES-842 8 Port RS422/485 Ethernet to Serial Adapter
Standard range
Order code: 43-1273
MPN: ES-842

Despatched same day - 1 in stockAdditional quantity lead time 2 days
1+ £496.39
Price per unit Ex VAT 		8 RS422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-446 1 Port RS232 PoE Ethernet to Serial Adapter
Brainboxes ES-446 1 Port RS232 PoE Ethernet to Serial Adapter
Standard range
Order code: 43-1264
MPN: ES-446

Available to back orderBack-order availability date - 23/07/2026
1+ £120.17
Price per unit Ex VAT 		1 RS232 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-457 2 Port RS232 PoE Ethernet to Serial Adapter
Brainboxes ES-457 2 Port RS232 PoE Ethernet to Serial Adapter
Standard range
Order code: 43-1265
MPN: ES-457

Available to back orderBack-order availability date - 23/07/2026
1+ £170.34
Price per unit Ex VAT 		2 RS232 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-420 1 Port RS422/485 PoE Ethernet to Serial Adapter
Brainboxes ES-420 1 Port RS422/485 PoE Ethernet to Serial Adapter
Standard range
Order code: 43-1263
MPN: ES-420

Available to back orderBack-order availability date - 23/07/2026
1+ £129.59
Price per unit Ex VAT 		1 RS422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-413 2 Port RS422/485 PoE Ethernet to Serial Adapter
Brainboxes ES-413 2 Port RS422/485 PoE Ethernet to Serial Adapter
Standard range
Order code: 43-1262
MPN: ES-413

Available to back orderBack-order availability date - 23/07/2026
1+ £170.34
Price per unit Ex VAT 		2 RS422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-511 Industrial Ethernet to Serial 1xRS232/422/485
Brainboxes ES-511 Industrial Ethernet to Serial 1xRS232/422/485
Standard range
Order code: 43-1276
MPN: ES-511

Available to back orderBack-order availability date - 23/07/2026
1+ £245.58
Price per unit Ex VAT 		1 RS232 / 422 / 485 terminal blocks Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-522 Industrial Ethernet to Serial 2xRS232/422/485
Brainboxes ES-522 Industrial Ethernet to Serial 2xRS232/422/485
Standard range
Order code: 43-1277
MPN: ES-522

Available to back orderBack-order availability date - 23/07/2026
1+ £287.39
Price per unit Ex VAT 		2 RS232 / 422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-551 Isolated Industrial Ethernet to Serial 1xRS232/422/485
Brainboxes ES-551 Isolated Industrial Ethernet to Serial 1xRS232/422/485
Standard range
Order code: 43-1278
MPN: ES-551

Available to back orderBack-order availability date - 23/07/2026
1+ £287.39
Price per unit Ex VAT 		1 RS232 / 422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet
Brainboxes ES-571 Isolated Industrial Ethernet to Serial1xRS232/422/485+Ethernet
Brainboxes ES-571 Isolated Industrial Ethernet to Serial1xRS232/422/485+Ethernet
Standard range
Order code: 43-1279
MPN: ES-571

Available to back orderBack-order availability date - 23/07/2026
1+ £329.18
Price per unit Ex VAT 		1 RS232 / 422 / 485 Ethernet to Serial Adapter 1 Ethernet to Serial Adapter Ethernet

Trustpilot