RW2000 Ibutton Key Card
The RW2000 Ibutton Key Card is a one-time programmable 1-Wire access credential built for deployments where a credential must be provably single-assignment at the hardware level. Every unit ships blank and accepts a single high-voltage write pulse via TM Pro programmer — on-chip fuse physically blows after the first programming cycle, permanently locking the UID. No software flag. No reset path. No field tool — Flipper Zero, Arduino, Proxmark3, or standard TM handheld — can overwrite it. Same 16 mm SUS304 steel housing, same 15 mm wide ABS handle (55 mm total), same seven stock colours as the TM1990A-F5 and RW1990, but the silicon guarantees zero re-assignment risk for the life of the credential. Deployed in government facilities, national railway signal-post access, and Cyfral/Metakom intercom networks across Eastern Europe. ISO 9001:2015 factory, CE marked. 2,000,000+ monthly capacity across five production lines. Free evaluation kit with TM Pro programmer ships within 3 business days.
