• Combines cable tracing (tone generator/probe), continuity testing, PoE detection, QC test, six‑wavelength optical power meter and visual fault locator (VFL).
• Continuity test shows open, short and cross wiring on RJ45/PoE devices; PoE detection indicates PSE type and voltage; QC test checks crimp quality.
• Optical power meter covers wavelengths 850/1300/1310/1490/1550/1625 nm with −70 to 10 dBm range; VFL emits 10 mW red laser to locate fiber faults.
• Receiver offers adjustable sensitivity, NCV, LED flashlight and low‑voltage prompts; transmitter/receiver use 3.7 V batteries and Type‑C charging; auto power‑off after 30 minutes.