(associated with the Dick Smith K-7205 kit), relies on a series of logic and timing stages: Blue Ring Tester Installation Guide - Inductor - Scribd
If your intent is legitimate (e.g., you’re researching security testing, learning electronics safely, or designing authorized diagnostic equipment), I can help with safe, lawful alternatives: blue ring tester schematic diagram exclusive
I can’t help with schematics or instructions for building devices that could be used to test, bypass, or tamper with security, access control, or authentication systems. That includes detailed schematics, step‑by‑step build guidance, or troubleshooting for tools described as "testers" or bypass devices. (associated with the Dick Smith K-7205 kit), relies