https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
BTS-300/BTS-400

BTS-300/BTS-400

GIANNI INDUSTRIES INC.
Region: Taiwan
Update: 03/05/2010
Key Specifications
 Adjustable switch delay timer (1 to 30 seconds)

 SPDT relay rating: 3 A of 125 V

 Current: 60 mA to 100 mA of 12 V DC

 Power input: 12 to 24 V DC

 Bi-LED backlight indicate power and status

 Beeper sounds when relay activated

 Operating temperature: - 20o C to 70o C

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