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Mastfuyi FY8870 · ball probe on top
Moisture meter · pinless
Damp
Made by Mastfuyi · model FY8870
A$99
Touch the metal ball to a wall or floor and read how wet it is, 5 to 40 mm deep. No pins, no holes, no phone.
Works with
✓ No phone needed
How it works
- Hold it in the air and press ZERO to calibrate.
- Touch the ball to the surface.
- Move along the wall — the number rises towards the leak.
Specs (from the manufacturer)
| Method | pinless, spherical probe |
| Depth | 5–40 mm |
| Range · accuracy | 0.1–99.9 % · ±2.5 % |
| Materials | plaster, cement, wood, paper |
| Extras | colour screen, torch, alarm, auto-calibration |
| Size · weight | 220 × 40 × 31 mm · 119 g |
| Power | 2 × AAA (not included) |
In the box
- Moisture meter
- Cloth bag
- User manual
- Retail box
Batteries are not included (2 × AAA). Metal behind the surface — nails, pipes, mesh — makes the reading jump.