SUITABLE FOR - This tool set is designed for cable line installation, inspection, and maintenance tasks. It helps assess telephone line conditions in various states and prevents damage to cable insulation. CONVENIENT - Establishes continuity in cables or wires, traces wiring paths, and diagnoses breaks or faults. MULTIFUNCTION - Detects tone signals on cables or wires, including telephone lines. Identifies line status such as clear, ringing, or busy. Transmits single or dual tone signals on target cables or wires. HUMANIZED DESIGN - Features large rear speakers for loud, clear sound output, ensuring audibility even in noisy environments. Includes intuitive buttons and indicator lights for easy operation. Offers an effective detection range of up to 3000 meters. EASY TO USE - Packed with features and designed for simplicity, this cable finder is a reliable assistant for professional and practical use.