Choosing the right industrial networking fieldbus gateway often comes down to two things: the legacy devices you need to reach and the money you are willing to spend. The Moxa MGATE 4101-MB-PBS is listed at USD 969.00, while the Invertek OPT-2-ETHEG-IN is listed at USD 152.98. That wide price spread makes the decision a practical one: what does the more expensive gateway give you, and is the lower-priced module enough for your network?
Quick Verdict
If you want the lower-priced module with an exact part number, the Invertek OPT-2-ETHEG-IN is the practical choice. If you need a Moxa fieldbus gateway with the serial connectivity described for that model, the MGATE 4101-MB-PBS is the product to weigh, but you will pay much more.
Comparison at a Glance
| Point of comparison | MGATE 4101-MB-PBS | OPT-2-ETHEG-IN |
|---|---|---|
| Listed price | USD 969.00 | USD 152.98 |
| Price indicator | ||
| Condition | Open box | New |
| Form | 1-port fieldbus gateway | Ethernet IP fieldbus gateway module |
| Model/MPN shown | MGATE 4101-MB-PBS | OPT-2-ETHEG-IN |
| Additional listed detail | 12-48VDC, RS-232/422/485 | Country of origin United Kingdom |
Where the Moxa Wins
The MGATE 4101-MB-PBS is the stronger candidate when your network expects a Moxa gateway and you need the serial connectivity described for this model. The exact Moxa part number is clear, so tracking the unit in an inventory is straightforward. The specifications give engineers concrete details to match against their fieldbus links.
Where the Invertek Wins
The OPT-2-ETHEG-IN is the better choice if your spending limit matters more than the higher-priced Moxa gateway. It is an Invertek part with a clear model and MPN, and its listed price puts it in a different budget category. For a network that can use this module, the upfront cost is much lower.
Product Notes
Moxa MGATE 4101-MB-PBS
The Moxa MGATE 4101-MB-PBS is the higher-priced fieldbus gateway in this pair. The unit is open box, and the model, MPN, and 1-port configuration are all clear. The specifications include a 12-48VDC input range and RS-232/422/485 serial support, which are useful details for engineers working with serial fieldbus links. The concrete reason to choose it is that you are getting a Moxa gateway with those serial and power features. The limitation is the higher cost and the open-box condition, which together make it a bigger investment than the Invertek module.
Invertek OPT-2-ETHEG-IN
The Invertek OPT-2-ETHEG-IN is the lower-priced module in this comparison. It is new, has an exact model and MPN, and the country of origin is the United Kingdom. The reason to choose it is the combination of new condition and a much lower listed price, which makes it the easier purchase for a budget-conscious Ethernet/IP project. The limitation is in the stated terms: responsibility for correct application and installation rests with the buyer, and the seller does not claim expertise in using the item. That makes this module a better fit for experienced integrators who can handle application decisions themselves.
Final Choice by Use Case
Choose the Invertek OPT-2-ETHEG-IN if your priority is the lower-priced module with an exact part number. Choose the Moxa MGATE 4101-MB-PBS if your project specifically calls for that Moxa fieldbus gateway and you are comfortable with the higher part of the price spread.
