https://www.asmag.com/download/2026-hikvision.pdf
Product Info
CP-21 Emergency Door Release Series

CP-21 Emergency Door Release Series

GIANNI INDUSTRIES INC.
Region: Taiwan
Update: 12/27/2006
Key Specifications
*Break Glass Unit

*Built in dual switch pole output ( N/CN/O contacts)

*Built-in key to replace the safety break glass.

https://www.asmag.com/project/resource/index.aspx?aid=24&t=isc-west-2026-news-and-product-updates