Buying access control software is not only “which controller”. Decide where data lives, whether video shares the same UI, how door growth is priced, and how fast guards can resolve an incident.
1. On-premises vs cloud
Factories, government, and large offices increasingly need offline operation and data inside the organization boundary. Cloud is easy to start, but ties you to connectivity and subscription. See ACS without the cloud.
2. Hardware and drivers
If the site already has ZKTeco C3, pick software with a native driver — not a custom script per integrator. EAS supports C3 out of the box — see the access control module.
3. ACS + video + map
A separate VMS and ACS doubles windows at the post. Platforms like EAS link door, event, and camera on a facility map.
4. License and TCO
Count more than the entry price: per-door fees × 12 months often beat a one-time license. EAS is ₽30,000 with no door limit; see pricing.
5. 先试用，再购买
在确认系统能在您现场跑通之前，不要签合同。把 EAS 装到自己的服务器上，用自己的控制器打开真实门禁。为此提供免费30 天试用；也可以先在浏览器演示里看界面。