A network camera is a new‑generation product combining traditional cameras and network video technologies. The video signal output by the camera is digitized and compressed by high‑efficiency compression chips, then transmitted to a web server via network bus. Do you know what the letters and numbers marked on network cameras stand for? If you are interested, please read on for the interpretation of these markings.

Letters and numbers printed on network cameras indicate the following specifications:

• 2/A/T: Array IR network bullet camera
• 3: Array IR network dome camera
• 4: Card‑type network camera
• 9: Fisheye camera
• Q: PTZ network camera
• D: DC12V power supply, outdoor‑use, IP66 rating
• D3: DC12V power supply, indoor‑use
• DE3/W: DC12V / PoE power supply, indoor‑use, with Wi‑Fi

That covers the introduction to letters and number markings on network cameras. Apart from the above symbols, there are other marking conventions which we will explain in future articles. Product model codes allow you to quickly identify core features, power supply modes and encoding schemes of different network cameras. Hope this article is helpful to you.