When your production line needs machine vision identification, the first decision is what kind of reader you're actually looking for: a dedicated imaging camera that reads objects, or a broader high-speed inspection system. The Cognex DataMan DM474QL-M is a used industrial machine vision imaging camera reader sensor. The Keyence SZ-VH1 is a new vision sensor high-speed inspection system. The price difference is significant-more than $1,200 separates them-and your final choice should depend on condition, the scope of the system, and the level of inspection capability your operation requires.
Quick verdict
Choose the Cognex DataMan DM474QL-M if you want a lower-cost entry point and can work with a pre-owned camera reader. Choose the Keyence SZ-VH1 if you prefer a new, high-speed inspection system and want a unit that's ready for a broader inspection role.
Comparison at a glance
| Product | Listed price | Condition | Controller platform | Price bar |
|---|---|---|---|---|
| Cognex DataMan DM474QL-M | USD 255.00 | Used | - | |
| Keyence SZ-VH1 | USD 1,477.24 | New | Automate |
Where each product wins
- Cognex DataMan DM474QL-M wins for a lower-cost, dedicated reading task. This unit is a camera reader sensor, so it's aimed at reading and identifying objects during manufacturing or quality control. It also takes the lower-priced position in this pairing.
- Keyence SZ-VH1 wins for a new, high-speed inspection platform. It comes as a new unit with an integrated setup, making it a more comprehensive starting point for inspection applications.
Product notes
Cognex DataMan DM474QL-M Industrial Machine Vision Imaging Camera Reader Sensor
At the lower end of the two listings, the Cognex DataMan DM474QL-M gives you a specific model number and an industrial camera reader sensor design. The model is DM474QL-M, and it's listed as used, so the condition is something to factor into your decision. A strong reason to consider it is the price: this is the more accessible way to bring Cognex machine vision reading onto a line. The limitation is that you're buying a used unit, and the listing focuses on the camera reader itself rather than a broader system. For a focused identification job with a modest budget, this reader is a sensible place to start. It also makes sense if you already have a vision setup and just need a camera-side reader to handle identification tasks.
Keyence SZ-VH1 Vision Sensor High-Speed Inspection System
The Keyence SZ-VH1 is the higher-priced option, and it's listed as new. It's described as a vision sensor high-speed inspection system, with a controller platform set to Automate and a country of origin of Japan. The clear advantage here is the combination of new condition and an included controller platform, which gives you a more integrated path for inspection. The limitation is the size of the investment relative to the Cognex unit. If your line needs high-speed inspection and you expect to rely on the controller setup, the Keyence SZ-VH1 is built for that role, but you'll need to weigh the additional cost. This is a more complete package for a new installation or an upgrade where inspection speed and controller integration matter.
Final choice by use case
If the priority is keeping the investment low while adding a dedicated camera reader, the Cognex DataMan DM474QL-M at $255 is the pick. It's a used unit, but it gives you a specific Cognex camera reader model and a direct path into machine vision reading.
If the priority is a new, high-speed inspection system, the Keyence SZ-VH1 at $1,477.24 is the one to choose. The larger budget buys a new unit with a more complete setup for inspection work.
Let the price gap and condition be your tie-breakers: used and lower-priced versus new and more integrated.
