Recommendation: Since your current 6120‑017 keypad and 61120‑307 lock body are showing electronic failure, you should replace the system. The closest modern equivalent is the Spartan Direct‑Drive (1007) if you want the same rotating keypad feel, or the Spartan PivotBolt (1006) if you prefer motor‑driven bolt action. Both are drop‑in replacements for the 6120 series.