Quick Help

1. Set Up

Insert the 9V PP3 battery.
Keep O‑ring and threads clean; lubricate with silicone grease.

2. Power On

Press the power button (>0.5 s).

3. Adjust Sensitivity

Use + / – buttons → 5 levels.

4. Audio & Ferrous Audio

Hold buttons to enable/disable audio or ferrous audio.

5. Rapid Re‑Tune

Short press to instantly re‑tune.

6. Inactive Alarm

Alarm after 3–5 min, auto‑off after >5 min.

7. Power Off

Press power (>0.5 s).