Nf-816

Bought to find broken boundary wire for robot lawnmower

The NF-816 (and its variants like NF-816L or NF-816-D) is an underground wire locator primarily manufactured by NOYAFA. It is designed to track and locate buried or hidden wires, cables, and metallic pipes.
Key Applications
Cable Tracking: Locating pet fence wires, electrical lines, telephone drops, and coaxial cables.
Fault Detection: Identifying breaks or "short circuits" in underground cables, such as boundary wires for robotic lawnmowers.
Safety: Determining the path of cables before drilling or excavating to avoid damage.
Technical Specifications
Feature Standard NF-816 NF-816L (Rechargeable)
Max Depth Up to 2–3 feet (0.6–0.9 meters) Up to 2 feet (0.6 meters)
Max Length Up to 1,000 feet (300 meters) Up to 2,400 feet (800 meters)
Power Source 9V Alkaline battery 3.7V Rechargeable Lithium battery
Tone Frequency 200kHz or 900Hz 200kHz