US$ 1,015.00
Upgrade your industrial display with the reliable ML121LL840 14‑inch Siemens Sinumerik 840C LCD upgrade kit. This high‑quality LCD upgrade kit is fully compatible with Siemens 840D/840C CRT systems, Siemens 576744, 576736, Hyundai Hitrol 840C, and 6FC51030AB010AA2, delivering outstanding clarity, extended lifespan, and easy installation.
| Product Information | Details |
|---|---|
| Product Model | ML121LL840 14‑inch LCD upgrade kit |
| Replacement Type | LCD (Complete upgrade kit) |
| Original Part Number | 576744 / 576736 / 6FC51030‑AB010‑AA2 |
| Compatibility | Siemens 840D/840C CRT, Siemens 576744, 576736, Hyundai Hitrol 840C, 6FC51030AB010AA2 |
| Features |
|
| Application | Industrial CNC machine control panels and HMIs using Siemens 840/840C platforms |
| What’s Included |
|
| Need Help? | Contact Us for assistance |
| Are you in US and worried about cross-border shipments? Purchase conveniently through our trusted partners.
|
|---|
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US$ 1,015.00
Upgrade your industrial display with the reliable ML121LL840 14‑inch Siemens Sinumerik 840C LCD upgrade kit. This high‑quality LCD upgrade kit is fully compatible with Siemens 840D/840C CRT systems, Siemens 576744, 576736, Hyundai Hitrol 840C, and 6FC51030AB010AA2, delivering outstanding clarity, extended lifespan, and easy installation.
| Product Information | Details |
|---|---|
| Product Model | ML121LL840 14‑inch LCD upgrade kit |
| Replacement Type | LCD (Complete upgrade kit) |
| Original Part Number | 576744 / 576736 / 6FC51030‑AB010‑AA2 |
| Compatibility | Siemens 840D/840C CRT, Siemens 576744, 576736, Hyundai Hitrol 840C, 6FC51030AB010AA2 |
| Features |
|
| Application | Industrial CNC machine control panels and HMIs using Siemens 840/840C platforms |
| What’s Included |
|
| Need Help? | Contact Us for assistance |
| Are you in US and worried about cross-border shipments? Purchase conveniently through our trusted partners.
|
|---|
Interested in Net 30 Payment Terms or have questions in mind? Contact us for further details:
|
|---|
The benefits of buying Siemens 840 – 840C Hyundai Hitrol from Monitech are substantial. We offer an upgrade over the OEM; the CRT that your unit currently has is very old technology, nearing the end of its life cycle. Our Siemens 840 – 840C Hyundai Hitrol LCD monitors are built with the current technology with a very long life expectancy; over 50 000 hours. We offer this new technology, at a much lower cost than the OEM charges for their aging displays. In addition to the monetary savings and enhanced performance of our Siemens 840 – 840C Hyundai Hitrol product, we have very quick lead times; we can often ship your new upgrade kit the same day your order is placed!
If you would like to order a Siemens 840 – 840C Hyundai Hitrol LCD upgrade kit, please feel free to Contact us! Our LCD upgrade kits include a new industrial strength LCD monitor and a cable kit with power and video connectors included for a simple and easy installation.
We offer an industry leading warranty and comprehensive technical support for the Siemens 840 – 840C Hyundai Hitrol. As well we employ innovative engineers that can develop and deploy a solution for your hard to find display requirements.
At Monitech, Quality is our Habit and we take Quality seriously. Our business is all about getting you back up and running as quickly as possible. This is why we warranty our products for one year against any manufacturing defects.
Sometimes a phone call or email can solve the problem. If you are having video or cable issues with your new LCD, read the user guide that came with your model. If you still need help, write to us for technical support from our Qualified Technical team. You can also call us!
USA Customers: 1-877-260-3426
Canada Customer: 519-725-2222
NOTE: If you purchased our product through one of our valued distributors, contact them directly.
| Product Description | 14 inch Siemens Sinumerik 840d – 840C LCD upgrade kit |
|---|---|
| Condition | New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). |
| Brand | Siemens |
| SKU | ML121LL840 |
| Compatibility | 14-inch Siemens Sinumerik 840 CRT, Siemens 576744, 576736, Hyundai Hitrol 840C, 6FC51030AB010AA2 |
| Model | ML121LL840 |
| Controller Platform | 14-inch Siemens Sinumerik 840 CRT, Siemens 576744, 576736, Hyundai Hitrol 840C, 6FC51030AB010AA2 |
| Accessories | All of our products come with installation guide and a cable kit that fits from your machine. This is a plug-and-play solution! No re-wiring, no re-programming. |
| Type | LCD |
| UPC | Does Not Apply |
| EAN | Does Not Apply |
| Warranty | Read our warranty details for our products: TERMS OF WARANTY |
| Return | Returns are accepted. Our standard return policy includes a 10% restocking fee. However, please contact us for more information. |
| Support | Click here to make a request for customer service. |
The kit includes a high‑quality industrial 14″ LCD panel (ML121LL840), metal mounting brackets, power and video cables for plug‑and‑play installation, and documentation. It replaces the original CRT with a reliable modern display (< 50,000 hr lifespan).
This upgrade kit is compatible with Siemens Sinumerik 840C and 840D systems — including CRT models 576744 & 576736 — as well as Hyundai Hitrol 840C units and equivalent 6FC51030AB010AA2 setups.
Yes. The kit is designed for plug‑and‑play installation, with all necessary hardware and cables included. No rewiring or reprogramming is required — simply follow the provided guide.
Your kit comes with an installation guide and documentation. If you run into video or cable issues, Monitech’s technical support team is available via email or phone for assistance.
The kit is backed by Monitech’s standard warranty. For full details, please visit our Terms of Warranty page.
If compatibility issues are identified prior to installation, you will be notified immediately. For other concerns, standard return policies apply. Please contact us with any questions before sending in your unit.
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