| 8 Isolated Channels Current AO Module | Hollysys SM511 | plcdcspro.com | 123 USD | 250 USD | −50.8% |
| Hollysys SM610 DI Module 16 Points, 24vdc | plcdcspro.com | 123 USD | 250 USD | −50.8% |
| Hollysys SM481 8 Channels Current AI Module | plcdcspro.com | 123 USD | 250 USD | −50.8% |
| Hollysys 8 Channels Voltage / Current AI Model: FM148C | plcdcspro.com | 166 USD | 300 USD | −44.7% |
| Hollysys SM711 16 Points Transistor Type DO Module 50mA, 24VDC | plcdcspro.com | 166 USD | 300 USD | −44.7% |
| K-CU11 | Hollysys K-Series Main Controller Module | plcdcspro.com | 250 USD | 350 USD | −28.6% |
| Hollysys K-DI03 32-Channel, 24VDC Input Module | plcdcspro.com | 220 USD | 300 USD | −26.7% |
| K-AI03 | Hollysys 16-Channel, Current Input, Redundancy (Optional) | plcdcspro.com | 220 USD | 300 USD | −26.7% |
| K-CUT01 | Hollysys 4-Slot Backplane Module | plcdcspro.com | 266 USD | 350 USD | −24% |
| K-PW11 | Hollysys DC Power Distribution Board | plcdcspro.com | 300 USD | 350 USD | −14.3% |
| Hollysys FM910 DCS Moudle | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM192B-CC Cold Junction Compensation Module | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM171 FM Series 16-channel Transistor Switch Output Module | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM161D Davitu Motor Driver | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM151A 8-channel Current-mode Analog Output Module | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM148A Control Unit | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM147E 8-channel Thermocouple Isolated TC Analog Input Module | newgenplc.com | 100 USD | 100 USD | — |
| Hollysys FM143 8-channel Thermocouple Isolated TC Analog Input Module | newgenplc.com | 100 USD | 100 USD | — |
| HollySys FM146A Servo Unit Replacement & Compatibility Upgrade Solution | indctrlhub.com | 0 USD | — | — |
| Hollysys SM910 Ruggedized Power Supply Module for Harsh Environments | indctrlhub.com | 0 USD | — | — |
| Hollysys Original Industrial Spare CPU Module Compatible | indctrlhub.com | 0 USD | — | — |
| Hollysys FM910 Original Industrial Spare | MACS DCS Series Compatible | indctrlhub.com | 0 USD | — | — |
| Hollysys FM192-TR Original Industrial Spare Active Terminal Module Compatible | indctrlhub.com | 0 USD | — | — |
| Hollysys Ruggedized Digital Output Module for Harsh Environments | indctrlhub.com | 0 USD | — | — |
| Hollysys FM131A Original Industrial Spare Main Control Unit Compatible | indctrlhub.com | 0 USD | — | — |
| Hollysys FM131-E Original Industrial Spare Main Control Unit Compatible | indctrlhub.com | 0 USD | — | — |