https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
GS-705 Shear Lock

GS-705 Shear Lock

GIANNI INDUSTRIES INC.
Region: Taiwan
Update: 12/27/2006
Key Specifications
*Powerful shear force provides highly security.

*Compatible with double swinging doors.

*With only 30mm width, the Lock and the Armature Plate can be mounted into average narrow door frames.

*Optional SMB-001 brackets for surface mount installation.

*Horizontal or vertical installation.

*Anti-Residual magnetism designed.

*Power input 12 to 28 VDC (self-regulating)

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions