When you're wiring control panels or expanding an existing automation cabinet, the hardest decision is often not the cable gauge or connector type-it's which remote I/O module to put between the field wiring and your controller. Do you buy a broad lot of spare modules, a single Ethernet adapter, or a specialized current-transformer input module? The right answer depends on your CPU, your field wiring, and whether you need a complete set or just one module.
Quick take
These four remote I/O modules cover different points on that spectrum. One is a Moxa Ethernet module for low-cost entry into a networked I/O point. Another is a mixed lot of Moxa modules from an industrial cabinet. The remaining two are a DirectLOGIC-specific Ethernet module and a Novar Opus current-transformer input module. The decision is mostly about matching the module type to your controller and cabinet.
Listed price comparison
| Product | Listed Price | Bar | Condition / Focus |
|---|---|---|---|
| MOXA Industrial Remote I/O Module Lot | $749.00 | Used, mixed module types | |
| MOXA ioLogik E1242-T Ethernet Remote I/O Module | $110.00 | New open box, Ethernet | |
| AUTOMATION DIRECT H2-ERM100 / H2ERM100 | $159.00 | New open box, Ethernet | |
| Honeywell NOVAR Opus XIO-8CTI-B | $284.88 | New, CT input module |
The price spread between the lowest and highest listed items is $639, so the first filter should be what your control architecture can actually use. The H2-ERM100 and ioLogik are both Ethernet remote I/O modules, but they serve different CPU ecosystems. The Moxa lot is the only option listed as used.
Decision matrix
| If your priority is... | Consider... |
|---|---|
| Lowest listed cost plus Ethernet for a Moxa system | MOXA ioLogik E1242-T |
| A broad set of spare I/O modules for a Moxa cabinet | MOXA Industrial Remote I/O Module Lot |
| An Ethernet remote I/O module for AutomationDirect DL205 CPUs | AUTOMATION DIRECT H2-ERM100 |
| A new current-transformer input module for Novar Opus | Honeywell NOVAR Opus XIO-8CTI-B |
Product notes
MOXA Industrial Remote I/O Module Lot
This used lot is the most comprehensive option in the comparison. It includes one M-4410 analog output module, one M-3810 RTD temperature input module, six M-1800 digital input modules, four M-2801 relay output modules, two M-7002 field power distributors, a Phoenix Contact QUINT-DIODE, a Crydom A2425 solid-state relay, and two Eaton Bussmann fuse holders. If you need a variety of spare I/O channels in a Moxa rack, this bundle covers a lot of functions in one purchase. The limitation is the used condition: the modules came from an industrial cabinet, were working when removed, and have not been tested since removal. Cosmetic condition is described as good, and they are sold as shown, so bench-testing before live use is wise.
MOXA ioLogik E1242-T Ethernet Remote I/O Module 12-36VDC Open Box
The most direct low-price entry in this set, the ioLogik E1242-T is listed as new open-box condition and runs on 12-36VDC. It is an Ethernet remote I/O module, so it fits a Moxa system that needs a network-connected point. The model number makes compatibility checking easy. The limitation is packaging: the original box was discarded, and the item ships in bubble wrap. For a spare module or a small remote rack, this is an easy way to add an Ethernet I/O point without taking on a big bundle.
AUTOMATION DIRECT H2-ERM100 / H2ERM100 DirectLOGIC DL205 remote I/O module
This module is specifically for AutomationDirect DirectLOGIC DL205 systems. It has one Ethernet 10/100Base-T port and works with D2-240, D2-250, D2-250-1, D2-260, D2-262, and Do-more H2 series CPUs. If your PLC is on that list, this open-box module gives you a straightforward Ethernet remote I/O path. The main restriction is compatibility: it is not compatible with the D2-230 CPU or H2-WPLCx-xx processors, so check your exact CPU model before ordering. When your platform matches, this is a direct fit.
Honeywell NOVAR Opus XIO-8CTI-B Remote I/O Module with CT 22-28VAC 50/60Hz NEW
This is the specialized option: a new current-transformer input module for the NOVAR Opus line, powered by 22-28VAC at 50/60Hz. It is built for reading current inputs in business and industrial control applications. The model XIO-8CTI-B is the one to match against your existing Opus I/O design. The limitation is focus: it is not a general-purpose digital or analog input module, so use it only where a CT input is needed. If you are expanding a Novar Opus system with current sensing, this new module is a reliable replacement or addition.
Final recommendation by use case
- For the lowest listed price and a single Ethernet remote I/O point, choose the MOXA ioLogik E1242-T at $110.00.
- For a broad spare-module set for a Moxa rack, the $749.00 MOXA Industrial Remote I/O Module Lot gives you the most channels, but be ready for used condition.
- For an AutomationDirect DL205 system, the $159.00 AUTOMATION DIRECT H2-ERM100 is the only module here designed for that CPU family.
- For a Novar Opus current-transformer input, the $284.88 Honeywell NOVAR Opus XIO-8CTI-B is the new, targeted choice.
