https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
DG-700 Stand Alone Proximity Readers

DG-700 Stand Alone Proximity Readers

GIANNI INDUSTRIES INC.
Region: Taiwan
Update: 07/16/2007
Key Specifications
*Allows up to 65000 proximity cards and PIN codes

*Tamper switch and alarm buzzer included

*Fully Programmable via keypad and master code

*Access mode selectable: card only  card or PIN  card+PIN

*Logical memory to prevent duplication

*Invalid PIN Lock-out

*Beeper sound gives of keypad composition

*Non-Volatile Memory

*Removable memory chip replacement

*Transmitting Frequency 125KHz

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