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

ActiveWave cardTag

ActiveWave Inc.
Region: United States of America
Update: 12/24/2007
Key Specifications
User Memory: 0 - 256 Kbits

Multi-Tag Read Capability: Yes

Transmit Frequency: 916 MHz, 927 MHz, or 868 MHz

Receive Frequency: 433 MHz

Read range Receive: 30m (100 feet)

Transmit: 85m (280 feet)

Power: 3V Lithium-ion watch battery

Battery Life: 1 - 3 years depending on use (tag has low battery detection)

Dimensions: 85.0 mm x 54.3 mm x 5.6 mm (3.3 in x 2.1 in x 0.2 in)

Weight: 23 grams (0.8 oz)

Case Material: ABS (Acrylonitrile Butadiene Styrene)

Temperature Operating: -35C to +70C (-31F to +158F)

Storage: -40C to +85C (-40F to +185F)

Options Memory: 0 - 256Kbit memory sizes available in 2x increments

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