TM1990 DS1990A Magnetic Ring Memory Card
Durable stainless steel casing with precision laser-etched serial numbers ensures long-term reliability in harsh environments. High-security 1-Wire protocol supports encrypted data transfer, ideal for access control, industrial automation, and IoT device authentication. Seamless integration with existing DS1990A/MG1990A systems—compatible with standard iButton readers for instant plug-and-play functionality. Magnetic ring design allows hands-free operation in fast-paced environments like warehouses, labs, and smart locker systems. Waterproof and shock-resistant construction withstands extreme temperatures (-40°C to +85°C) for outdoor and industrial use. Bulk pricing available—direct manufacturer sourcing guarantees unbeatable wholesale rates for large-scale deployments.